using house electrical wire.

WHOA... dude... calm down. I see now what you were trying to say. I simply misread what you typed the first time... I took it the other direction, that's all... I see what you are saying, and I don't disagree, but wow... I guess it DOES get you riled up. All I was trying to say to the OP, and slab42 was that at DC there won't be any difference between a "home" wire, and a "car" wire, electrically speaking, but that home MIGHT be more brittle in the short-term, in the vibration prone environment of a car. The insulation ISN'T a factor, in this case, as most of the wire for the home will FAR outperform "car" stuff anyday, both thermally and chemically, and as long as the appropriate gauge is selected, there will be no difference.It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

We're cool as ice dude, it's all good. Yeah,..I do get a little worked up about technical stuff sometimes. You should try digging up some of my old RC car tech forum posts on wire size and connector loss. I nitpick the technical detaisl, and it get me in trouble from time to time. I tried to make the post appear friendly, but I obviously missed the mark. Mea culpa. We definitely took it in different directions. Yes, the OP can use house wire. It'll be a pain in the butt to install, and probably won't last as long due to brittleness issues, but our conclusions were the same. I actually do have a little bit of some really beefy 1/0 panel wire in my car as a ground, but it's due to get swapped out the next time I tear my trunk apart. It's only in there because it was the handy bit of the right size wire when I was rushing to get the system installed...I'd never choose to use it on purpose, only because it's stiff as hell and a b*tch to crimp a connector onto. Thankfully it's only a foot and a half long, and doesn't ever need to flex.This is not a sig. This is a duck. Quack.