Painless Wiring Official Site of Painless Performance, American Made wiring harnesses for your hot rod, street rod, muscle car, off-road and everything in between. Wire it once and wire it right with Painless. Complete Wiring Harness Kit - coolcruisers Wiring Harness Kit - When the wiring gets too old to repair or you just want to do your FJ40 restoration right from the ground up, then the Painless wiring kit is your highest quality solution. This Painless Performance wiring kit is a complete kit and not a stripped down kit as offered by others. The Painless award winning reputation is behind each kit.