Have blown he 10a fuse for this 3 x's in the last two months. This morning stated the truck "04 Dble Cab and for a while the instrument lights would fade in without the lights being turned on. If I put on the left blinker they would blink with it. Got to work, turned off the truck and turned it back on again it is OK now. This has only happened when it has been wet then very cold the next day. -20 or so. Could the trailer harness be installed wrong and be causing this when it becomes wet?? That is the only electrical mod other than the alarm mod I did from this site (or the old site). Any idea's guysn'gals?