I just bought some KC lights to be mounted on the A pillars. Followed the diagram and checked multiple times for errors. Wired the switch exactly as the instructions say and the green led light comes on. When I flip the switch the relay clicks as it should. But no light. Any suggestions? I'm confused. I've checked the fuses and they look good as well. I know the ground for the switch is good because the green light comes on. I've even tried placing the ground wire on the negative terminal to make sure the ground wasn't the issue.

 

If it were me just to check that they work, I'd run jumpers straight to the battery and then ensure they work. Then go from there and see what's up.

 

First do what blue says.

Are the lights grounded to the chassis or back to the relay? Can you post a pic of the relay connections? Link to the actual lights you purchased?

 

I just found the problem. Schematics were wrong. Hot wire from relay needed to go to positive and the instructions had it going to ground.

 

Cool. Glad you got it sorted.