Gary Martin

I've searched online extensively and cannot find how to fix if the Trailer Battery fuse socket is empty (re: no prongs to install the fuse). I am wanting to have 12v on my 7 way plug to trickle charge my camper. 2017 GMC 2500HD 4x4 crew cab with towing package. On my 2003 Silverado it was as simple as replacing the cap on Post1 with a 30 amp fuse. TIA...