Roof Lights on 1500

[Morgan McGinnis]

I added roof lights, factory lights and factory 2500 harness and I need to find a spot to tap power to run them. I want them to function like factory lights, on with the DRL, parking lights, with fob. I cut the end off the factory wiring harness I purchased and ran 2 wires down the pillar one power one ground, and I have a good ground. Is there anywhere to tap off the BCM with a T tap? I can't for the life of me figure out how to do this, and I'm not good at reading a wiring diagram. Is there anyone that can tell me "put a tap on the ____ connector at pin ____"  All help appreciated!

[Naughty Donkey Performance]

Can't you just use a fuse tap off of your headlight or foglight fuse?

[Mark57]

Like to see a picture, did it come close to antenna?

 

[Naughty Donkey Performance]

On 2/14/2024 at 4:44 PM, Mark57 said:

Like to see a picture, did it come close to antenna?

 

Me too pics please

[eppieguy]

I've always wanted to do this mod but so many have talked me out of it and I'm too chicken Sh$t to be drilling holes in my 83k roof! 

[diyer2]

Why poke holes in a roof that could lead to leaks, same with my homes roof. Satellite companies mount dishes on roofs because it's easy, I told the tech if you can't mount it elsewhere forget it.

It is mounted on the ground on a pole. 

[Morgan Graves]

13 hours ago, Naughty Donkey Performance said:

Me too pics please

 

[Morgan Graves]

26 minutes ago, eppieguy said:

I've always wanted to do this mod but so many have talked me out of it and I'm too chicken Sh$t to be drilling holes in my 83k roof! 

Maybe it's because I'm still kind of young, but can't be afraid! Be confident in your ability and it'll come out great!

[Morgan Graves]

On 2/14/2024 at 7:44 PM, Mark57 said:

Like to see a picture, did it come close to antenna?

 

The template I used was from this forum for a 2500, all the measurements came out exactly the same.

[Naughty Donkey Performance]

3 hours ago, Morgan Graves said:

 

Looks F'ing GREAT, links please......... or part numbers ?

[Morgan McGinnis]

9 minutes ago, Naughty Donkey Performance said:

Looks F'ing GREAT, links please......... or part numbers ?

Thank you! I used all factory parts, here's the list:

Genuine GM Roof Wiring Harness #84694118

OEM GM Sierra, Silverado LED Amber #84747497, #84747496

Now the 1500s aren't pre-wired like the 2500s, but all the clips on this harness will still clip into the roof of a 1500. Thought this was a nice surprise! All I did was snip the plug off the harness where it would plug into the A pillar harness and run 2 wires down the pillar. Ground one find power for the other and you're done!

Here is the link for the template, for 2500s but the measurements are all the same:

https://www.gm-trucks.com/forums/topic/248996-how-to-add-cab-lights-to-a-2020-silverado/

[Naughty Donkey Performance]

Thanks ordering today, I am gonna DRILL me some leaky holes..

Will make  a video of the whole shebang and post er up!

Thanks again, check out the led lighting I did on the front of my truck, I think it looks nice.

Assman is because of my plate......... Donkey reference and all

[Morgan Graves]

15 minutes ago, Naughty Donkey Performance said:

Thanks ordering today, I am gonna DRILL me some leaky holes..

Will make  a video of the whole shebang and post er up!

Thanks again, check out the led lighting I did on the front of my truck, I think it looks nice.

Assman is because of my plate......... Donkey reference and all

Those came out very nice they won't leak, my only suggestion would be in the bottom of the lights is a raised gasket around every bolt. Factory doesn't use silicone according to my dealer... I did!

[LowUfo]

Easy to do.  Used same measurements as from a 2500HD.  No problems. No leaks,  Power wire connected under hood with "add a fuse" connected to park lights.

 

[Morgan McGinnis]

27 minutes ago, LowUfo said:

Easy to do.  Used same measurements as from a 2500HD.  No problems. No leaks,  Power wire connected under hood with "add a fuse" connected to park lights.

 

I'm continuously blowing fuses with add a circuit, tied to 42 parking lamp right. Any suggestions?