Originally Posted by TerminatorX5

i used the pin 6 on the middle plug in the PDC controller - I forgot what official number for that plug is. I did my research back in 2007, when I connected it - so, my memory fails me now as to, why I chose that particular pin...

however, that pin supplies i think (+) signal, enough to feed a small, tiny Radio shack relay that throws a (-) to the trigger wire. If you have the PDC and a Voltmeter, get to the pin 6 of the middle plug (there are 3 plugs on the PDC), measure voltage, then turn on the PDC button on the console, and see if you are picking up (+) or (-)... I think it is (+). Then, get yourself a relay (I will have to dig it up and see what model it is), and wire the (+) from pin 6 to the coil of the relay, which will trigger the (-) to the camera trigger wire - as a result, you will have the rear camera come on everytime the PDC is activated. I had my camera ON at all the times (ignition hot), so, there was no delay when I threw reverse gear on. The drawback is that when the speed signal shuts off the PDC, you can not have the reverse camera on at 60 MPH!!!

As I am in the process of wiring the 4.8iS (the new ride), I got myself a license plate light camera with a wireless sender/receiver unit - maybe that will save me on ripping the trim to run a wire to the battery compartment. I was also hoping to avoid splicing into the wire for pin 6 by getting a custom made harness (get a pin terminal and a pin socket) but I found the pin socket plug and can't find the pin terminal plug... So, maybe I will have to splice again (4.6iS has it spliced)