my running lights work when the truck is not running but with the truck running they do not work the fuse just keeps popping i replaced the relay and all the bulbs are new i removed the trailer harness and there is no radio in the truck the clip is missing on the radio but the wires are not touching any advice would be helpful

 

Is there any other circuit not working when the engine is running??

Is it only with the engine running or does the fuse open with the ignition switch on??

Any place any of the light harness might be getting pinched with the engine running??

Some place your either overloading that circuit or have a short to ground .

Anything else wired into the light circuit ??

Light for the radio shorting to ground with the key on?? Could just be two wires rubbing at the back of the plug.

 

The dash lights don't work also but the radio wires aren't touching and I also unplugged the cig lighter cause I know when u turn light on it runs through there also I pulled out the wiring that went to some lights the po had on the truck