Is it the stock camera? If it is, it does not use RCAs. It uses a harness but it has separate video+ and video- wires.
Your best bet would be to tap into those at the door sill with the single end RCA cable from radio shack. It has an RCA end on one side and the video+ and video- wires on the other. This is what it looks like.
Yes you could just tap into those two wires. You will also probably have to tap into your reverse wire to send that signal to your head unit. That way you can set it to automatically come on when in reverse. The stock camera is always on but the mirror is activated by the reverse signal. So if your head unit allows, you will be able to view your reverse camera view at any time, not just when in reverse.
The video + and video - wires are both white coming out of the camera. I am not sure but I would assume that they would be the same color at the mirror. If you want to strip them back, the video + has a copper colored core and the video - has a silver colored core.
The reverse wire is located at the mirror as well or it is located under the passenger door sill plate in the massive group of wires there. The reverse wire is green/brown and will show 12V when the vehicle is in reverse only. There are 2 identical green/brown wires in the bundle. I'm assuming 1 goes to each of the backup lamps but I'm not certain so make sure you test before you install.
wow, thanks alot guys. I have a Factory Service DVD, so I guess I'll break it out and trace out those wires you guys are describing.
good point about the reverse trigger. hadn't even considered it yet. wasn't aware the camera was always powered. good info.
I'll do a write-up of the install once I do it. I ordered a bunch of goodies. Kenwood DDX616 radio, Pac CR-FRD1 Canbus Adapter, and a Pac Swi-Jac steering wheel adapter.
still need to grab a 5v resistor and some extra wire to do the camera install. I apparently have the factory sub in my Expy, so it's getting wired up as well. Wierd what you find when you actually start looking
Have you guys even considered looking at a boyo camera system? You can get as a license plate or a separate camera. Some of you are using aftermarket head units. Its a lot easier then splicing into your existing system