Does Trailer Wiring Harness 118269 Have a Fuse that Can Be Yes, trailer wiring harness # 118269 does have a fuse in a black holder just below the large black converter box. If that fuse is fine then use the vehicle owners manual to find any fuses related to tow package wiring on the vehicle to check them. fuse box wiring harness | eBay 12 Circuit Basic Wire Harness Fuse Box street hot rat rod wiring car truck 12V. Brand New. $58. 2008-2014 Subaru Impreza WRX STI Engine Bay Fuse Box Wiring Harness Alternator See more like this. GM Wiring Harness 6884 Delphi B Trailer Glove Box Jumper w/ Fuse and Plug X16749. OEM, Buy With Confidence, 30 Day Warranty!!