[GotRoad?]

I have made similar electrical repairs using a product called Plasti Dip which I bought at Home Depot. It is some sort of fast curing, rubberized product that you brush-on, spray or dip. I used the spray can & not the bulk container. OTOH, maybe you could dip your wiring & let the excess drip off. In any case, I used the spray very sparingly, letting it dry a min and then repeating to build up a continuous even coating. I used a heat gun to speed up the process. The stuff remains flexible and waterproof & is heat resistant. Hope this helps: good luck with your repair.