Did a very basic battery-to-trunk project. Built the bracket out of an old hollywood bed frame, and ran 1/0 welding cable for the pos wire over the wheel well and into the wiring gutter under the sill plate, and through a bulkhead connector under the heater box, then a short cable to the solenoid. The neg cable is simply attached to the q-panel support (convert) where there is an unused 3/8-16 nut welded there. At the front, I used a 1/0 ground from the subframe (welded a nut there) to the engine block. I have welded SFC's on the car. While I was at it, I wired the purple "S" wire to a 50A Bosch relay, which draws power from the bulkhead connector. Also installed a PMGR starter. It all seems to work very well.