Power Wire from Battery to motor Solenoid under hood. 2 gauge wire, which is two sizes up from OEM, but this is WELDING CABLE. This wire is 24" long, and has solid copper lugs with a 5/16" hole in each lug. It is an upgrade from OEM.. See Related Items for 36" wire. We make these cables in house. Welding Cable has more copper strands than battey cable, so it is a better conductor, and it is more flexible.