Long time no post,
Send your stock engine harness to SpearTech. They will trim it out and send instuctions on how to hook it up. Costs about $350, and well worth it. If I could post photo's here I'd show before and after. Just amazing, the difference.
My article on the engine should be published in the June issue of "Military Vehicle Magazine". Sorry it's taken so long, but we had to upgrade the entire truck to safely handle the 275hp offered by the 4200.
