I ordered my RJM harness on Sunday night, and received it in the mail via UPS today. This harness is freaking insane. I screwed around with a stock 91 mustang harness for months trying to get it right. This is the cleanest most professional harness I have seen. It comes pre equipped with a relay block and a fuse block. This is designed to plug right into your factory ford harness. I haven't got a chance to lay it out in the car yet because I am on call this week :cry I anticipate a quick, clean install. I will post pictures when I get a chance, but I tell you what, this harness is worth EVERY penny :$$$ If you are thinking going EFI, save yourself the time and trouble and buy this harness.... I could have driven my car this summer if I had just bit the bullet. ANYWAY, TOTAL PROPS to RJM. 