LED tail lights with resistor, CC inop

[bdl04]

Hey everyone,
I just installed some new LED tail lights on my 05 Yukon Denali and now cruise control doesn't work. Now that I have this issue I have seen that this is common and that the main fix for it is an in-line resistor. These tail light assemblies came with a resistor already wired into each of the assemblies but still no cruise control. Here's a link to what I got:

https://www.amazon.com/dp/B07Q46R969?psc=1&ref=ppx_yo2ov_dt_b_product_details

Any ideas how to fix this? I assume check fuse for CC but is there anything else anybody knows about that might have caused this?

Thanks!

 

[dps01]

I have some of those in my Amazon cart that I have not pulled the trigger on… Think I will wait to see what the final solution is.

 

[Fless]

Where do you see that they have integrated resistors? I see one review that asks how to fix the cruise control, and the answer is to add resistors.

 

[bdl04]

Where do you see that they have integrated resistors? I see one review that asks how to fix the cruise control, and the answer is to add resistors.

It shows them in the 4th picture on Amazon. Also, I have them and can see the resistor. It's not super clear from instructions which lead from the harness goes to each of the connectors on the tail light assembly so maybe I just have them flip flopped. The running light, brake light, and signal seem to all use the same set of LEDs so I'm going to try swapping and see if that fixes it. Don't have the highest hopes that'll work though.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving clarifying questions from the knowledgeable folks on this Forum.

 

[bdl04]

Here's my Yukon with the lights installed. I noticed that I had the wires between connectors crossed. Fixed that and still no dice. Going to swap the connectors all together later and see if that does it. If not, I'm out of ideas.

 

[wjburken]

Put your old lights back in and if your cc works, it’s most likely the new lights.

Put an ohm meter on the old lights and compare that reading with the same reason in the new lights.

My guess is your new lights have a slightly too small resistor and the system thinks you have a bulb out.

 

[adventurenali92]

Put your old lights back in and if your cc works, it’s most likely the new lights.

Put an ohm meter on the old lights and compare that reading with the same reason in the new lights.

My guess is your new lights have a slightly too small resistor and the system thinks you have a bulb out.

This is probably the most accurate answer. I have LED tails and they had resistors built in already as well. I had to run extra resistors on the LED tails, tied into the running light setup since on mine, and I’m assuming the OP’s lights, the running light also functions as a brake light so it needs proper resistance in order for cruise control to function correctly.

 

[bdl04]

This is probably the most accurate answer. I have LED tails and they had resistors built in already as well. I had to run extra resistors on the LED tails, tied into the running light setup since on mine, and I’m assuming the OP’s lights, the running light also functions as a brake light so it needs proper resistance in order for cruise control to function correctly.

I think you all are correct. Thanks for the advice. I'll get that going and let everyone know how I end up for future reference.

Thanks!

 

[adventurenali92]

I think you all are correct. Thanks for the advice. I'll get that going and let everyone know how I end up for future reference.

Thanks!

Keep us posted on what happens with it. Also nice looking 2005 Denali. My 2006 Xl Denali is the same color.