Fogs on with park/head lights

[bentarm13]

It worked! I used 2 in-line wire splicers and a piece of wire. Green fog light symbol doesn’t come on, can’t turn em off anymore but I don’t care about either of those. Thanks for the tip.

[bentarm13]

It works! I used 2 in-line splicers and a small piece of wire. Fogs now on with running, low and hi beams. Little green indicator lights doesn’t come on anymore and I can’t turn em off but those don’t matter to me. Thanks for the info.

[jbr1888]

On 2/18/2019 at 10:54 AM, asalinasz39 said:

https://www.gmupfitter.com/files/media/photo/1085/19_Sierra_1500_Body_Builder_SM_U_2018AUG29.pdf

 

Found the info. So far I was thinking of putting a diode from pin 18 module X2 (gray wire) to pin 4 module X7 (gray/blue wire) and this way have the cargo lamps come on with the bed lamps and have extra light when unlocking vehicle at night or when loading up the truck bed at night. 

 

What do you guys think? I would like to include the mirror perimeter lights but I couldn't find them on any of the modules...perhaps I overlooked it. 

Doc1.pdf

Doc2.pdf

Doc3.pdf

I am interested in doing this too. I've looked at the diagrams and it seems like it may not work unless there is a BCM signal that is only active when the unlock/lock buttons are pressed/activated and this signal could be jumped to the cargo lamp relay. I haven't found the electrical process or flowchart for the unlock/lock sequence  as it relates to the exterior lighting in the up fitter manual yet. 

Edited July 21, 2020 by jbr1888