Red X Angler
If I change to a new GPS later on will I be able to get the old cable out.3M 5200. Guaranteed never to rust, bust, cheat, steal, or gather dust. I would drill my hole and put a clam shell over it. More than likely just partially fill the clam shell with 5200. It's not going to leak but you'll never get it totally off the cable either. It's permanent.