Put in the rock lights today.

I have 5 total, 2 in the front bumper, 2 in the middle, and one over the rear diff. front two and middle two are working, rear is not

I have it wired like this. Power from batt to relays, 2 lights per relay, except the rear one. The rear one is on it's own relay, but the relay is designed for two lights. The relays are properly wired to switches, AFAIK.

Is there any chance that there being one light on a relay that is designed for two would make the light not work?

 

It wouldn't make a difference. Each relay is good for about 30amps of current and it doesn't matter how many lights are hooked as long as it doesn't pull more than 30amps. If you have a light that's not working you need to check the relay and check to see if you have power and ground.

 

I have a similar set up, 1 light on a 2 light relay. works just fine, pull the relay apart and make sure it isn't all corroded, that would be my guess since its out in the open...its not mounted upside down is it? Check grounds and actual bulb.

 

ya check the obvious things first, check to see if the bulb is good. hook a jumper wire directly to the light, see if they go on. then check your relay wiring