Fuse Problem Need help Before Weekend

[landon05]

Sup guys. I recently purchased a gooseneck horse trailer and had my fifth wheel hitch installed at a good shop here in Houston. Problem is, every time i go to connect trailer lights they are never working. The first time it was the fuse and im wondering what could keep making the fuse blow out?!?!?! Im going on a trail ride this weekend and need this problem fixed before I get on the highway so any help would be appreciated... Thanks

Second question anyone know what fuse is the fuse for the trailer lights??? The store who installed my hitch fixed it the last time it went out and i just checked the fuse box and they were all good so IDK

[countryraised]

I think the fuse is in the engine compartment, iirc, it's part of the tow/trailer package. (haven't touched it since putting it in 3yrs ago).
there must be a short somewhere in the trailer. or your pins don't match functions between truck and trailer?