HOW TO: Add Digital Rearview Mirror

[vincentw56]

Here are the instructions for installing the digital rearview mirror in the RAM.

Part List:
Mirror with 1 Video Input Channel, no FCW or ACC - 68448639AB

Mirror with 1 Video Input Channel, with FCW or ACC - 68448641AB

Mirror with 2 Video Input Channel, no FCW or ACC - 68519111AA

Mirror with 2 Video Input Channel, with FCW or ACC - 68519222AA

Center high mounted stop lamp with camera - 68551077AB

10' Fakra Z - Female to Female
https://www.amazon.com/dp/B07P2VBYWZ[/TD]


Parts if you have a 2019/2020:
2021+ BCM - 68496414AD
Wiring Harness from Jimmy07

You only need one of the mirrors. Just choose the one that fits your vehicle and if you want to have 2 inputs or not. You only need the 2 inputs if you plan on adding another camera like cargo, trailer, etc. For the 2019/2020 you will need a 2021+ BCM and the wiring harness from Jimmy07. You can get a used one from a junkyard. You can then stash this under the driver's side dash or the front seats.

Installation is fairly simple. Replace the CHMSL with the new one. Run the cable in the headliner from it to the mirror. Replace the mirror with the new one. Connect the mirror, truck and BCM using the wiring harness. Start the truck and enjoy your new mirror.

2019/2020s will lose auto dimming side mirrors.

For 2021+, use AlfaOBD to set the following settings for auto dim size mirrors.

LIN & Misc: CRVMM Present to NO

CBC Config I/O Usage: RVDM Present to YES

 

[vincentw56]

Reserved for future.

 

[vincentw56]

Reserved for future.

 

[Jack.]

Saving for later dates

 

[deepc6]

Awesome!

 

[mike_ct]

So not replacing the current bcm (for a 2019)? adding a 2nd bcm under the seat?

 

[vincentw56]

So not replacing the current bcm (for a 2019)? adding a 2nd bcm under the seat?

You can try replacing it, but you have to have the dealer do it because they have to do a procedure that assisns your VIN to it. I had no luck with that working so I cannot verify it would work. That's why it isn't part of the guide. If someone does it and it works, I'll add that as an option. But it needs to be verified working.

 

[mike_ct]

so you have a 2nd bcm stashed with a harness from Jimmy07? did you have to do special configuring on the 2021 bcm?

 

[vincentw56]

so you have a 2nd bcm stashed with a harness from Jimmy07? did you have to do special configuring on the 2021 bcm?

No, that's why there is nothing in the how to about programming with AlfaODB.

 

[Toperz]

Just to make sure. If my truck has FCW then I should get mirror with that feature, right?
and is it 10' enough length of fakra cable if I have sunroof?

 

[vincentw56]

Just to make sure. If my truck has FCW then I should get mirror with that feature, right?
and is it 10' enough length of fakra cable if I have sunroof?

Yes on both. I have the sunroof. Even without it, 6 foot is just a little too small. 8 foot would be perfect.

 

[Toperz]

Yes on both. I have the sunroof. Even without it, 6 foot is just a little too small. 8 foot would be perfect.

anything needs to be changed in alfa? I'm seeing options :

 

[vincentw56]

anything needs to be changed in alfa?

Nope

 

[Jack.]

68448641AB, 68444540AB + 10ft wire is all I need if I have the 2021 model with forward collision warning correct? I also read that you loses the dimming option of the passenger side mirror is that true ?

 

[vincentw56]

68448641AB, 68444540AB + 10ft wire is all I need if I have the 2021 model with forward collision warning correct? I also read that you loses the dimming option of the passenger side mirror is that true ?

Yes, that's all you need. I don't know about auto-dimming on 2021+. I do know you lose it on 2019/2020.

 

[Jamesalan98]

Is there any issue with the LED brake light replacing the incandescent light? Like hyperflash? Are transistors going to be needed or service lights coming on?

 

[vincentw56]

Is there any issue with the LED brake light replacing the incandescent light? Like hyperflash? Are transistors going to be needed or service lights coming on?

No issues. I had the normal incandescent lights.

 

[OhMyGADO]

Was wondering if the rearview mirror from a 3500 fits the 1500? I believe if I'm not mistaken it has the same part #. Dumb question I know. I just need confirmation before I splash $600 on a rearview mirror

 

[cskindt]

Was wondering if the rearview mirror from a 3500 fits the 1500? I believe if I'm not mistaken it has the same part #. Dumb question I know. I just need confirmation before I splash $600 on a rearview mirror

If it's the same as any numbers listed earlier in this thread, it'll fit.

 

[Csjumper2003]

Subd