I did mock up the harness on my engine but I never cut or soldered to the wires nor did I ever get to start the engine I'm running into money issues so I'm piecing off items from my project cars im taking a loss because taxes alone was almost 100 dollars as is this is brand new this let's you use a carburetor on any ls gen 3 or gen 4 if you have a swap and like carburetors the harness is simple and you can't even tell there is a harness compared to efi it's simple If you hit me up with "what's the least you'll take" I won't respond make an offer then well talk