I had mine installed over the weekend in an '08 GMC Sierra, and the 'night display' function for the navigation was not working, so I look it up in the manual and figure the guy didn't hook the orange/white wire to the lights. Just got back from talking with him and he told me that everytime he hooked it up, it blew the fuse. So he supposedly called tech support who told him there is an issue with the '07/08 Chevy/GMC computers that cause that to happen. Sounds like BS to me, but I wanted to check around before I raised too much hell. Anyone ever heard of this problem?