Thanks for all the tips. I'll probably just run a wire directly to the battery. I just didn't really want another wire under there since I already have wires for:
- Stereo
- Additional siren for alarm
- Supertone horns
- P/A speaker (fun with pedestrians and other drivers)
- Engine grounding mod
Whew! Fun with electricity!
vorlon333 - Thanks for the link, but I already have 3 outlets (see added pic above). I just want to make one of them "hot" when the car is off.