Adding front and rear parking sensors?

[Quietpeen]

Hey, I swapped my front bumper for a Westin Outlaw. I thought I put all the sensors back in the same orientation but I am getting continual warnings when I drive. The pass side seems ok but the front is super sensitive and randomly senses stuff that is not there and the driver side is almost constantly jumping from not sensing anything to warning red. I might have swapped the drivers side sensors (very possible actually). Would this cause the funny action? Anyone know where I can find out if I have the right sensors in the right location?

Harness part number is: 2021-2024 Ram 1500 - 68489203aa
The 2 sensors on the drivers side each have 3 wires. One of them has Gry, Y/W, Blu/W the other is Gry, Or/W, Blu/W.
Right now I have Gry, Or/W, Blu/W as forward facing/front.
I have Gry, Y/W, Blu/W closer to the tire in the far left/drvr position.

Truck is a '21 Bighorn 1500DT. Thanks for all the info so far!

on my truck(21 TRX) all the fronts sensors are the same part #. The only difference was the bezels they go into which I guess changes the direction they point slightly.

 

[Digipenguin]

If this is the bumper you have it's very possible the sensors are just picking up the bumper itself based on them being recessed slightly and having the tubes in front of the sensors View attachment 191230

Yep. That's the one. Man, I hope its not picking up the bumper. You'd think they would have figured that out before now. It's been out for many years. I hope someone can help me out with either a schematic or pinout for the harness I listed above so I can rule out misplacement of the sensors themselves. Are the sensors sensitive to clocking as far as "is there a top and bottom"?

Any idea where I could find the schematic or pinouts for the connectors on the harness?

Harness part number is: 2021-2024 Ram 1500 - 68489203aa

 

[Digipenguin]

on my truck(21 TRX) all the fronts sensors are the same part #. The only difference was the bezels they go into which I guess changes the direction they point slightly.

I thought that was the case but even in the PDF directions for adding parking sensors in this very thread they list different part numbers for clocking left or right of the connector housing.

Front Bumper
Sensors x4 5YV68TZZAA
Sensors x2 6MK25TZZAA

 

[Digipenguin]

In case it helps anyone. Here is the parking assist schematic for 2021.

 

[HSKR R/T]

Yep. That's the one. Man, I hope its not picking up the bumper. You'd think they would have figured that out before now. It's been out for many years. I hope someone can help me out with either a schematic or pinout for the harness I listed above so I can rule out misplacement of the sensors themselves. Are the sensors sensitive to clocking as far as "is there a top and bottom"?

Any idea where I could find the schematic or pinouts for the connectors on the harness?

Harness part number is: 2021-2024 Ram 1500 - 68489203aa

I'm not sure it matters which sensor is where, at least in my 2020, all the sensors were the same. And the plugs on the harness are pretty self explanatory on which sensor they go to based on length and location of the pigtails of course my aftermarket bumper doesn't have the two sensors on each side so close to each other.

 

[Quietpeen]

I definitely saw a thread(maybe on the TRX Forum) that said which way they are clocked is important. I will try to find it, but I think the outer two both sides the plug was pointed toward the center of the bumper and the inner two the plug was pointed toward the edges of the bumper

 

[Quietpeen]

found the thread and what I said above is correct. Outer two both sides the plug is pointed toward the center and the inner two are pointed toward the bumper edges.

 

[Digipenguin]

found the thread and what I said above is correct. Outer two both sides the plug is pointed toward the center and the inner two are pointed toward the bumper edges.

Thanks. That's how I have it.

I ended up just taking them all out, cleaning the connectors, reinstalling them to the harness and mounting them to a stick and testing them one by one. Everything worked so I reinstalled them and assumed the problem had to be with the positioning. I just drove the truck and whichever one acted up I moved it's position until it worked. the movement was literally a degree or two and maybe a mm in one direction or another. Its hard to be precise with the way they mount. Eventually after a couple adjustments they all started working like a peach. I halfway wonder if they don't just do some sort of self calibration.

 

[drewski22785]

Hi All,

I am working through the process of adding park sense to my 2024 Ram 1500 Limited. I am hoping to get some help on the parts list needed for this. I found the VIN of a truck that is the same trim but has park sense, Limited with Limited level 1 package. I am finding some differences that I want to make sure are not an issue with the process described in this thread. I do want to caveat my truck does come with air suspension, someone had mentioned air suspension in reply so I want to just throw that out there.

The biggest thing I have in question is the rear park sensors. The limited with park sense has 6 sensors in the rear. All of the descriptions in this thread only have 4 which seems to be Laramie and below trim models. The limited level 1 package also comes with the Park assist package which might be the reasoning for the extra 2 sensors in the rear.

I still have questions about the harnesses and other wiring but want to start with the components first. Should I use the Laramie or below parts without park assist or should I use the limited parts which appears to be slightly different but closest to my model? Thank you for any and all help!

 

[Outdoorsman4x4]

@Y--- as far as the wiring for the front, I bought the OEM wiring harness that goes from a factory plug out to the Fog lights / Front sensors... I believe all Level vehicles are pre-wired to a certain point.. for ex. the front is wired from a plug on interior then out to a plug behind the drivers front wheel well, and for the rear, it's wired from the plug under the drivers seat out to rear harness...
If any member wants to tackle this mod, I will be more than happy to supply part numbers, diagrams, and etc...

-=FM45=-

FM45 would you be willing to help me out.....I'll pay you for your help

 

[drewski22785]

I successfully completed my mod and wanted to add some information in things I learned.

I did not remove the front or rear bumper or drivers seat to complete this in my 2024 Ram 1500 Limited. I can see how this would make things easier but I don't know how much extra time it would save. Here is my extra information:

Paint the sensors as a prep step beforehand or complete the setup in an order so the paint is dry by the time you are ready for installation.

Front Setup:
Lift the front end so it is easily accessible from underneath.
Remove the Center Grille first from underneath, this will help to make the left and right fog lamp covers more accessible.
Remove the Fog Lamp, wheel well cover, at least the bottom front covers (the entire wheel well cover would make the fog lamp removal easier)
Although it is tight you should have enough rooms to replace all the parts and run the new wiring harness.
I put in the new harness as I pulled out the old to make sure all the placement was the same.

Rear Setup:
The fit is tight but with patience all bolts/nuts wiring is reachable. The tightest fit are the outermost bolts at each edge of the bumper. A small socket gets the job done 1/16 of a turn at a time.
Remove the Tailgate and any rear license plate. This will make the center most wire harness connector accessible from above.
I put in the new harness as I pulled out the old to make sure all the placement was the same.

Internal Wiring Harness:
I am sure you can build your own but the one from Jimmy was perfect, no errors, every cable was wired. Maybe you save $100 for DIY, but given the ease with and accuracy it isn't worth the savings in my opinion.

Remove Driver Kick Plate, Driver seat belt cover, Driver seat outer cover (this order as the seat belt cover, covers the seat cover)

Internal Wiring under drivers Dash:
The trickiest part is getting access to the plugs and as several mentioned they can break off the plastic mount. So here is what I found.
Unplug all 3 plugs on the plastic mount. Plug A, Plug B, and whatever the third plug is not used per the pictures in this thread (plug C).
Unbolt the plastic mount, there are 2 bolts coming from the rear wall that need to be taken off. Unhook the hood cable and allow to hang free.
Using advice from Quietpeen and his pictures on these plugs, you can orient/turn the mount enough to unlock Plug C, and detach the harness from the mount (Christmas tree plug).
Pull the hood cable through the mount. This will give you enough movement to turn the mount and access the back side of Plug A to remove it from the mount. See Quietpeen pictures to identify what you are looking for.
At this point you will have enough access to Plug A, and Plug B (still attached to mount)
I could not remove Plug B, but with everything else removed I had plenty of access.
Again see Quietpeen Pictures and descriptions as well as others details in this thread for proper wire pinout/procedure.

Internal Wiring Under Drivers Seat:
After removing the panels described above you just have to move the carpet a little to access the plug. Remove the plug snapon cover, and cut zip tie for proper finishing. Rezip tie new wires with old wires when complete.
Remove the three nuts holding the plug down.
From underneath the truck remove the three nuts holding the cover in place (directly below the aforementioned plug). Unlock plug from underneath and disconnect.
The plug should be reasonably accessible now. For each pin being added remove the blue rubber grommet in the plug before inserting the new wire/pin. I could not figure out how to use these grommets so I just sealed the pins with a little silicone.

Alfaobd programming:
I used the windows version so maybe the instructions weren't as obvious as described.
Use advanced mode to select your interface. Go back to Regular mode.
Brand > Dodge/Ram; Model > Ram 1500; Function > Body Computer; ECU > DT MY2022+ PowerNet (or the one that matches your model); Connect
After Connecting go to "Active Diagnostics"
From the Drop Down select "Car Configuration Change"
From here you should be able to find all of FM45 settings.

Hopefully this helps. Total time probably took 10 - 12 Hrs. If I had to do it again, after learning the above and learning the location of everything I think it could be done in 3-4 Hrs. But be patient and take your time is my advice.

 

[brental1]

Made the 3 required wiring harnesses today. Still have lots of parts to get ordered, but i wanted to make sure I could get the harnesses figured out and done before spending all the money.

View attachment 171632

I’m going to try to get the module and these pinned into the existing harnesses tomorrow. Will try to get pictures along the way

Did you buy and modify the harnesses (as I think FM45 did?); or did you build them from scratch. If scratch, do you have the PNs for the 3 connectors, and the pins for each? Thanks, Brent

 

[Quietpeen]

Did you buy and modify the harnesses (as I think FM45 did?); or did you build them from scratch. If scratch, do you have the PNs for the 3 connectors, and the pins for each? Thanks, Brent

I made it from scratch and used the write up from post 15 i believe. However for simplicity I'm pretty sure Jimmy07 makes these harnesses.

 

[brental1]

I'm looking to do this on my '24 Rebel, but when searching for the C1-C3 connectors, it looks like these connectors come with wire and connectors and each connector is between $80-$100. Example: Genuine Mopar Wiring 68080557AA for sale online | eBay. Is this right? I would think you could just buy the actual connector.

Ryan

I'm trying to build the 3 harnesses (without using the kit). Did you find PNs for just the connectors and pins?

 

[rtm03862iq]

I'm trying to build the 3 harnesses (without using the kit). Did you find PNs for just the connectors and pins?

I haven't started on this project yet but will soon. I plan to buy the harnesses made by a forum member.

 

[brental1]

with the help of @Jimmy07 it has been determined that you don't have to splice into any wires on Connector B in the write-up at all. Through a total screw up of my own I had to look into(and by look into I mean freak out that I screwed something up and went to Jimmy07 for help ) what the wires were going to. Turns out the fused ignition at Pin 3 is the factory fused ignition for park sense. The diagram shows that the wire comes from the fuse box to connector B in the Write-up. On a truck that didn't come with parking sensors from the factory there is no wire at pin 3 on the other side of the connector. So for the C1 harness in the write-up you just need to run a wire from pin 1 on the C1 connector and pin the other side of the B connector at #3. Part # for pin is Aptiv 35091062

For the ground for C1 in the Write-up you just need to ground to the chassis just Like Jimmy07 said in post #43 In the picture below I have circled where the existing ground to chassis is right by the new park sense module.

View attachment 171826

Ground location
View attachment 171827

To clarity, I need to run a new wire from Assembly-Power Distribution Center-Interior Pin 31 to XY331A Pin 3 (female side). Then run the wire from Module-Park Assit C1 Pin 1 to XY331A Pin 3 (male side). ? Seems it would be just as easy to splice, as FM45 said--but I want to keep everything like it should be. So, If what I wrote is correct, then I'll do it that way. Thanks, Brent

 

[brental1]

I need more info about adding this to a Big Horn.
Front-2 sensors in fog light bezels, 2 in bumper grill. My truck doesn't have the end panels on the bumper for the other 2. Are the extra 2 sensors for Advanced Park Assist? Will Park Sense work with 4 sensors? If so, which harness PN do I need? If not, where do I put the other two? Drill the bumper?
Rear-V6/single exhause have a one piece bumper trim. PNs are 68404394/5AA for Advanced Park Sense (3 sensor holes) 68404392/3AA w/o Advnaced (2 holes). I'm ordering the Advanced in case I want to do that mod in the future.

Appreciate any input.

Thanks,
Brent

 

[2020_White_Laramie]

Five years ago, I started this thread with the hope of adding parking sensors to my 2020 Laramie. This past weekend, I successfully installed the front and rear sensors following the detailed instructions from @FM45. They are spot on and include everything you need for an easy install. I would add and/or change a few things to make things easier:

First off, buy a 1oz tube of Dielectric grease. Grease all connections that are NOT video connections.
1.) I used a different front harness because I have LED fogs.
2.) Remove the rear tailgate to access the middle harness connector sandwiched between plastic.
3.) Order extra pieces from Mouser and buy a micro pin crimper.
4.) Make the 36" harness 48" - the extra length was perfect, make the other two harnesses 18-24". I made mine 24", you can always shorten them.
5.) When installing the C2 pins into the connector under the driver's seat, pins 45, 46 get inserted 180 degrees different than pins 10-13. Also, after you remove the silicone plugs for these pins, cut off the smooth end, then drill a 1/16 hole through the middle to slide it onto your wire to seal the connection after insertion.
6.) Plug A is difficult to remove - slide a 1/4"x1/16" thick piece of metal with a 30 degree bend at one end, up into the back of the connector from the bottom and try to push the tab toward the engine. Then slide the connector DOWN.
7.) Pick any spot on the Can block behind the headlight switch.
8.) Instead of pinning C1 ground to plug B pin 10, crimp a 1/4" round terminal to the end and connect to the vehicle ground post under the park module in the left kick panel. Either method works fine though.
9.) You can pin C1 fused ignition power supply to plug B pin 3 if the female side has a pink wire with green stripe. (Mine did and it was the fused ignition)
10.) You do not need to remove the driver's seat.
11.) Buy a park module with the 3 connectors and wires attached with at least 2" of wire. I crimped my wires to them and put shrink tube over the connection. I also lucked out and found the correct module with connectors when I bought it.


When you are finished, this mod will look like it was factory installed.
Compared to kits being sold by infotainment, THIS is the way to go and is comparable in price, plus it looks and feels factory instead of running wires through firewalls or tapping into the accessory outlet.
Five years in the making, and thanks to the work by @FM45, I now have factory front and rear parking sensors.

 

[brental1]

Five years ago, I started this thread with the hope of adding parking sensors to my 2020 Laramie. This past weekend, I successfully installed the front and rear sensors following the detailed instructions from @FM45. They are spot on and include everything you need for an easy install. I would add and/or change a few things to make things easier:

First off, buy a 1oz tube of Dielectric grease. Grease all connections that are NOT video connections.
1.) I used a different front harness because I have LED fogs.
2.) Remove the rear tailgate to access the middle harness connector sandwiched between plastic.
3.) Order extra pieces from Mouser and buy a micro pin crimper.
4.) Make the 36" harness 48" - the extra length was perfect, make the other two harnesses 18-24". I made mine 24", you can always shorten them.
5.) When installing the C2 pins into the connector under the driver's seat, pins 45, 46 get inserted 180 degrees different than pins 10-13. Also, after you remove the silicone plugs for these pins, cut off the smooth end, then drill a 1/16 hole through the middle to slide it onto your wire to seal the connection after insertion.
6.) Plug A is difficult to remove - slide a 1/4"x1/16" thick piece of metal with a 30 degree bend at one end, up into the back of the connector from the bottom and try to push the tab toward the engine. Then slide the connector DOWN.
7.) Pick any spot on the Can block behind the headlight switch.
8.) Instead of pinning C1 ground to plug B pin 10, crimp a 1/4" round terminal to the end and connect to the vehicle ground post under the park module in the left kick panel. Either method works fine though.
9.) You can pin C1 fused ignition power supply to plug B pin 3 if the female side has a pink wire with green stripe. (Mine did and it was the fused ignition)
10.) You do not need to remove the driver's seat.
11.) Buy a park module with the 3 connectors and wires attached with at least 2" of wire. I crimped my wires to them and put shrink tube over the connection. I also lucked out and found the correct module with connectors when I bought it.


When you are finished, this mod will look like it was factory installed.
Compared to kits being sold by infotainment, THIS is the way to go and is comparable in price, plus it looks and feels factory instead of running wires through firewalls or tapping into the accessory outlet.
Five years in the making, and thanks to the work by @FM45, I now have factory front and rear parking sensors.

I'm confused about the sensor brackets (bezels). FM45 said

Five years ago, I started this thread with the hope of adding parking sensors to my 2020 Laramie. This past weekend, I successfully installed the front and rear sensors following the detailed instructions from @FM45. They are spot on and include everything you need for an easy install. I would add and/or change a few things to make things easier:

First off, buy a 1oz tube of Dielectric grease. Grease all connections that are NOT video connections.
1.) I used a different front harness because I have LED fogs.
2.) Remove the rear tailgate to access the middle harness connector sandwiched between plastic.
3.) Order extra pieces from Mouser and buy a micro pin crimper.
4.) Make the 36" harness 48" - the extra length was perfect, make the other two harnesses 18-24". I made mine 24", you can always shorten them.
5.) When installing the C2 pins into the connector under the driver's seat, pins 45, 46 get inserted 180 degrees different than pins 10-13. Also, after you remove the silicone plugs for these pins, cut off the smooth end, then drill a 1/16 hole through the middle to slide it onto your wire to seal the connection after insertion.
6.) Plug A is difficult to remove - slide a 1/4"x1/16" thick piece of metal with a 30 degree bend at one end, up into the back of the connector from the bottom and try to push the tab toward the engine. Then slide the connector DOWN.
7.) Pick any spot on the Can block behind the headlight switch.
8.) Instead of pinning C1 ground to plug B pin 10, crimp a 1/4" round terminal to the end and connect to the vehicle ground post under the park module in the left kick panel. Either method works fine though.
9.) You can pin C1 fused ignition power supply to plug B pin 3 if the female side has a pink wire with green stripe. (Mine did and it was the fused ignition)
10.) You do not need to remove the driver's seat.
11.) Buy a park module with the 3 connectors and wires attached with at least 2" of wire. I crimped my wires to them and put shrink tube over the connection. I also lucked out and found the correct module with connectors when I bought it.


When you are finished, this mod will look like it was factory installed.
Compared to kits being sold by infotainment, THIS is the way to go and is comparable in price, plus it looks and feels factory instead of running wires through firewalls or tapping into the accessory outlet.
Five years in the making, and thanks to the work by @FM45, I now have factory front and rear parking sensors.

I'm confused about the sensor brackets (bezels, trims). FM45 said to use 68335619AC, 20, 21, 22, 23, 24.. I ordered a 4 piece (not sure why not 6) kit. It contains PNs HU-CRR017-BZ, 18, 19, 20. Are these keyed to make them error proof? If not, how do you know where to fit them? And, which tow PNs am I missing?

Thanks,
Brent

 

[2020_White_Laramie]

The Bezels are for the front lower grill and two outer fog light surrounds. Each piece has 2 sensors for a total of 6. Fitment is keyed on each to allow for the correct orientation of each sensor plug. I bought all OEM parts online from McKinney CJDR in Texas. Their online site had detailed diagrams and list/show specifically where each part is to go. I wrote the locations down if you need them for each oem bezel listed by @FM45

You are missing #23 and 24 or
HU-CRR012-BZ and HU-CRR013-BZ from your site