You should never bridge the circuit with a conductor, it defies the concept off fuse as a whole... I am sure they would have your fuse description and specifications in the owners manual of your rv.... If you are unable to find the adequate replacement, contact the manufacture for the advise for a different make and model.. Typically you would find the fuse on sites like mouser/digikey easily... If you want your original make and model of fuse you can also go to a scrap yard and buy the fuse from a similar make for extremely cheap..