UPDATE!!! Guys, as promised, I did a little experiment and came to some conclusions. No need to shell out $100 dollars for the Dynamics. I apologise for the long post but just wanted to contribute and provide some insight on the subject after doing my own experiment today.
So I got my new truck (2021 Laramie level 1 with LEDs) about two weeks ago. After swapping out the two cargo yellow halogens with LEDs (i left the brake one alone since mine is a red reflector), i noticed even inside the truck it wouldn't recognize the key fob if the cargos are activated. The LEDs i tried were called Rayhoo, so do not buy! I will be returning them to Amazon. Big time interference and issues inside and right around the outside of the truck.
At first I was going to just take the plunge on the Dynamics like many suggested, but then i was boggled by the fact some of you had luck with other brands that were 10-12 bucks on Amazon. I said what the heck, let me get a few different brands and do an experiment. Not for the sake of saving a dollar but what if a 10 dollar brand works just as good?
I purchased the JDM Astar like some suggested and also purchased the Alla. I also found Philips 921 white LEDs but saved it in the Amazon cart, since they were about 20 bucks i figured let me work my way up the $$ ladder and go from there. After doing this experiment, i do wonder about trying the Philips but anyways.
My experiment today was as follows: i wanted to see if different brands had any interference and if so, DISTANCE from the truck was affected COMPARED to the stock halogens.
How i did it: i took my bike out for this one. Parked the truck at the end of a large empty parking lot (yes at 4am) and started with the stock halogens. Rode my bike far behind the truck and tested the key fob distance with the halogens. Rode back, swapped out for the LEDs, rode back, and so on. Tried both LEDs mentioned above...and so on.
What I found: The stock halogens allowed me to unlock and lock the truck continuously from a good 450-500 feet. This was my experiment control, something i would be able to compare to. The JDMs allowed me to UNLOCK from the same distance obviously, BUT....when the cargo lights activated the interference did not allow any other key fob functionality until i got to about 150 feet from the truck. In other words, there is interference from the LEDs but once i got to about 150 feet, everything worked perfectly and continuously including having it in my pocket and all that. I swapped out the JDMs for the other LED brand the Alla ones and it was exactly the same experience. They worked good only at a close distance once the lights were activated.
Conclusion: JDM Astar and Alla both work well but the interference will affect key fob functionality at about 150 feet only when the cargo lights are activated. Meaning, if you have to start your truck from 500 feet it will still work but after that first press, if your cargo lights are on, you would have to be within a closer distance to do further remote functions or wait till the cargos turn off. For me, thats not a biggie since i still want the LEDs and probably won't need 500 feet of functionality. At least i don't think dropping 45 bucks on Dynamics is worth the extra coverage? I mean is it even guaranteed? Anyone test it? By testing it meaning you unlock and lock and unlock continuously while the lights are activated...
I do wonder, and I almost bet that the Dynamics also cause interference (compared to the halogens) and would hope someone would do a similar test and maybe compare their Dynamics to their stock halogens and compare distances. I think the results would probably be similar to what i came up with, but at this point i will keep the JDMs since the price sounds about right and i doubt the Dynamics will do better.
Here are the two Amazon brands that worked for me and hope it helps the rest of you! And again my apologies for the long post.
Alla 921:
JDM Astar 921:
Buy JDM ASTAR Extremely Bright 2000 Lumens 360-Degree Shine 921 912 90-EX Chipsets LED Bulbs For Backup Reverse Lights, Xenon White: Back Up Lights - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
