So I asked this question in the haltech section on this board all ready. I did not really get that straight of an answer. I plan on using the Haltech E6X for my car. Do I need to keep the factory engine harness for the plugs or does it come with them. The reason that I ask is that someone wants to buy the factory harness from me.

I did search and found little info. If I do sell the harness what is it worth?

 

They don't include the plugs, just the flying lead wires.