I'm working from memory, here, but I think the GPS connector wire is 18ga. I put a powerlet socket on the left black infill panel and hooked it to the GPS line. I can't remember what 18ga gives you in terms of current capacity, temp rise, etc., but you should have a nice bit of amperage continuous with that. I've got some tables around here and could look it up if you want, or you could do an internet search. What are you wanting to power with it?