We used the Harbor Freight crimping tool to connect the black\ground #10 wires together in the #6 terminal end butt connector..
Then we connected the black to these two wires. The Air Breezer manual said we could do this so it is not some random decision.
We could not find the heat gun, looked all over the boat but now We think we know where it might be now. The heat shrink will have to wait to be shrunk :)