Why does my trailer running light fuse keep blowing?
Why does my trailer running light fuse keep blowing? You have a short circuit somewhere that is causing the fuse to blow. Likely causes of a short on a vehicle include a dirty or corroded trailer connector or damaged wiring. Make sure the trailer connector is clean (go ahead and do the same for the trailer side connector while you're at it). Why do trailer lights keep blowing trucks fuse? There is a 20 amp fuse in the passenger kick panel that controls the trailer's running lights (brake lights and turns are another circuit) that keeps blowing. Interestingly we also...