Todd,
You've given me an idea. Rather than have an extra cable hooked to the battery and having to find a sanitary way to route it, I'm going to look at wiring the accessory socket directly to the battery with an inline fuse..... It is only 2 wires, one to a harness ground and the other to the fuse box.
I can probably use one of the Gerbing wiring harnesses that came with the gloves and socks - they already have a 15 amp fuse in them...