RSA Not Illuminating (Solved)

[1BadDenali]

Hello Everyone! I've been browsing this site for a while now and recently made an account, as much as Ive browsed I haven't really found an answer to my question, I have a 2005 Yukon XL Denali with Bose audio and the rear seat audio, my rear seat audio controller has never illuminated since I've owned it, I replaced bulbs, verified by running power on the circuit board and all lights illuminated as well as replacing it with a verified working new rear seat audio controller and the new did not illuminated either, im wondering if anyone has a connector diagram so I can see if it's the harness, thank you in advance!

 

[Fless]

Look on www.charm.li

 

[1BadDenali]

Update: pin outs were okay, harness was working properly, appears that both rear seat audio controls had bad circuit boards that will intermittently go out, go figure