I dug out my battery cables to see what, if anything I need - holy cow - I ended up with Taylor 1ga wire. This is only an 8.5cr 5.0 Ford, not a honkin' diesel!! There's more then enough red (+) but not enough black (-) so it might be an interesting color scheme if I can't find a 3-4 foot length to use. My intent is to lug (ground) to the frame then continue to the engine in a virtually continuous run.