2003 dmax w/ auto start, aux. fuel tank switch, snow plow, juice w/ attitude and electric brake module.

For the past two months I've periodically checked my brake lights to see if operating properly. Everytime the 15 amp veh. stop fuse on the side of the dash is blown.

Does this have anything to do with all the aftermarket electrical devices or does anyone think that the mechanic wired something wrong?

I do pull a trailer. I checked the trailer, no shorts, and I have two of the exact same trucks, one without all the ad-ons and one with. The one without I've never blown a fuse!

Thanks for the help!