Don't know how they wire up a FW. But I had a blowout too on my MH that took out my entire sewage bay. Repaired that and was on my way no problems.
Fast forward a few months and I got stopped for no side lights. Well I eventually found that the rv manufacturer ran the wires from side to side for the lights up and wrapped over above the axle and up and over the beam, with over 4 spliced connections. :R
Crawl 'under neath' your RV and 'follow all those wires' they could be cut and/or loose connections from the blow out.
THAT is where I found my electrical problem from the blowout.