FIXED!
I have found a nice power connector that should not have the issues the Winegard power cable has.
CNLINKO 2 pin power connector male plug and female socket waterproof outdoor IP67
You just need to remove the original power connector and enlarge the existing hole to accept the new socket (do not remove too much material). Cut the wires off the original socket and solder to the new socket. Always keep the "hot" wires on the #1. Drill the 4 holes to bolt on the new socket. Seal the socket and the original mounting holes with silicone sealant.
You then need to attach the cable connector - watch the polarity - hot on pin #1. The center of the cigarette lighter 12V connector.
Link to ebay connector