We are pleased to offer Howell engine wiring harnesses for your LS conversion. If you do not see your application, or if you need help deciding which harness you need, please contact us. There are many more options available than what is currently shown. 

Howell is one of the most experienced harness manufacturers on the market and covers just about any GM engine you might want to swap. Each harness is a custom made to your specifications - there are no off-the-shelf products. There are many options to consider - emissions controls, fan wiring, aftermarket gauge sender leads, extra harness length, or upgraded nylon braid sheathing just to name a few.

Current lead times are 3-5 days plus shipping time. Harnesses with ECU programming will be shipped with a reprogrammed ECU, and you will return yours to Howell as a core. If you need a core ECU or any parts (pedal, O2 sensors or bungs, MAF sensor, etc., we can accommodate those into the order.

All prices shown include shipping in the U.S. (lower 48).