My deck was stolen awhile back and I recently bought a used one off of ebay. I attempted to hook up the new deck using my old brain and back-up camera but the camera function only pops up when in drive and the screen is black. I hooked it up using all the wires that were still in the dash. It's been so long since I did the original install I might've just hooked a wire up wrong this time. Help Please. PS. Everything else works fine. Amps, subs, video, audio.