Over the bed lights in '79 Sovereign blow fuses

[Sovereign42]

Hi. The reading lights in my '79 Sovereign are continually blowing their fuse. I replace it and two or three days later for some unknown reason, POP, there goes the fuse again. My Airstream fixit guy says she needs a new fuse box, but I don't currently have the money to haul the rig to him and have it replaced. Is there an easy fix? At one time I thought it might be linked to the overhead lights, but I see no sign that the wiring for the reading lights is routed through the three overheads. I wonder if there is a short somewhere along the line that is rubbing against the metal frame now and then and shorts them out and have considered running a new wire from the back of the trailer to the front, the box is in the front and the bedroom is in the back, and then reconnecting at the two ends. ANY IDEAS. JLD