Lincoln Mark IV 4L80E Electrical, Lighting and Wiring Parts

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

A real-world guide to 4L60 transmission specs, strength, and swap tips.

Check out this headlight wiring and taillight wiring diagram.

Watch our Steering Column Wiring Guide video for useful tips on wiring your new steering column for your vehicle. Ididit takes you through the wiring process.

Do you have a project that will require you to build your own 4-link bars? Here's a demonstration on how to determine the bar length, weld the parts and assemble the links using steel tube ends weld bungs and forged 4-bar rod ends.