New to trucker report.

Howdy there everyone. Son of a trucker for 23 years and a trucker myself now for 2. Looking for a little help. I drive a 2004 fld120 with a series 60, dump truck. after hauling popcorn all day( very rubbery type of asphalt used on highways) I had about an inch and a half stuck from front to back of the bed. One of the guys on the crew said he'd heat my bed from the bottom and it would roll right out. Do that as it may in the process he fried some of my wire under the bed. My running lights still worked fine but when I turn my headlights on they all shut off and only one of my headlights comes on. I have already fixed the fried wires and checked some relays that are in the cab and still have no lights any information is greatly appreciated


thanks in advance, jr