I will be hooking up my heated seats tommorrow in my 2k3 max. At least the front seats, maybe the rears too. The relay needs to be hooked up to a 40A source. I know the ignition is one possible wire (blue, under the dash, I believe). I'd rather use another wire, if possible. So suggestions are welcomed

I have the elements for both front and back. I'll take pics of my ghetto install too (putting them under seat covers). Thx for any advice.