I'm not sure what's going on then. I've never had a problem closing a standard automotive 30/40A 5 pin relay... I think they are supposed to close with only 150-200mA.

Just to recap... with nothing else connected. Reverse white/yellow dots wire on pin 85 and ground on pin 86. Put it in reverse and it DOES NOT close? You will probably need someones help to test this so you can be back by the relay. Otherwise you have to check continuity between 30 and 87 to see if it closed.

Edit: If you are going to trigger with PDC... you will need a micro relay. Radio Shack has them in stock (Item 275-241). That's what I used (after hijacking most of Terminator's ideas) for my Avin backup camera install. You will need to solder and use breadboards though. Also available at Radio Shack. Check out my DIY thread on the reverse camera install... it will show you. I'm still not sure why your reverse light wire is not triggering it.

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