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.[PDF] Wire Harness Installation Instructions Painless Performance at (800) 423-9696. The Painless Wire Harness Kit should contain the following: A The Main Wire Harness, with the Fuse Block wired in and fuses installed. Head Light, Wiper, Ignition and dimmer switch’s are included with the harness.