New Fuse and Relay Center for all Duramax Harnesses shipping after January 1, 2017.
Gen 4 LS will use the same fuse block plus an additional (2) relays for fans.
For our customers who have experienced a catastrophic loss due to Hurricane Harvey and Irma please contact us for a refund of the work done to your wire harness. Conditions apply but we're here to help.
Doing it yourself sometimes doesn’t pan out. The typical LS, Gen 5 LT1 or Duramax harness has hundreds of individual wires and each has a specific place in the harness. While setting it up for standalone yourself is possible with the right tools and information, you will also need to bring plenty of patience. Rely on our knowledge and experience instead to provide you with a harness that requires just 4 connections to make your LS, Gen V LT1 or Duramax Swap Engine run. Take a look at the LS Engine Gen 5 and Duramax pages for more details and examples of our work.
A Lauraland, LLC Enterprise
Every harness is completely opened and electrically load tested.
Duramax Lead Time is 2 Weeks, Gen 5 LT is 2 weeks, Gen 4 LS is 2 weeks.
Simple 4 wire hook up to make the engine run. (A Single Ground, 12V Constant, 12V Key On, Fuel Pump)
6' OBD diagnostic port is included on every harness.
Contact us for a quote on LB7, LLY, LBZ, & LMM Duramax Diesel engine harnesses.