Hi Guys i really want help for this issue !

I would just buy a few spools of wire and start patching with solder, shrink wrap, electrical tape.

I'd inspect the bulbs, flashers for power/function, switches for power/function, bulkhead if necessary.
Cut out any rippled overheated wires and replace as well check down the line and for continuity making sure it's not shorted/still shorted if the case.
Get a test lamp, multimeter, pad to lay on and probably take out the front seat for room...also check them damn jamb switches for the dome... they've shorted and drained the battery on me before.