Hi all! I am new to the forum and truck world for that matter. I just picked up a 03 Silverado Z71 ext cab. I am swapping some audio gear from my last vehicle into it, but I have hit some snags. The truck does not have the bose system or onstar, I wired the harness to the eclipse one and pluged her in and nothing. About all that would work is the the open button. I tried this with another kenwood deck as well and nothing. Obviously I have something screwed up, is there any tricks with wiring up a truck? Does anyone have any advice? Thanks!