Adding a sub and amp to my silverado. You audio guys, if you have seen any wiring diagrams that would help me (2005 Silverado with Bose and OnStar) that'd be great. I've been searching and the closest I've come is just the 03. I bought the scosche LOC so I'm just trying to figure out which wires I need to get into for my signal output and for my remote amp power. Here's what I see when I get to the amp:



And my guess would be that the wires I need are in this harness:



That's the blue one seen in the top left of the previous picture.