I was pulling a trailer for a friend, during the pull I lost my running light but had brake lights. I checked under the hood and found the fuse blown. Disconnected the trailer replaced the fuse and I had light, light that stayed on! The pull switch on the dash could turn the lights on but not off. This did not mess with the head lights they go on and off fine. I thought it might be the relay stuck, nope. The only way to get them off was to pull the fuse, you hear the relay turn off and you can put the fuse back in and the lights will stay off until you turn them on again with the switch. Could the problem be with the switch. Does it short the relay to make the lights go off. Any Ideas would be great!

Well, i beleive there is a relay for the headlight and running light operation, i would replace that, if there is not a relay, get a new switch.

Yeah, I thought it would be the relay first. I switched it out with one of the other ones but it still did it. Not the relay. Thanks for the post!