back to basics, RELAYS

[NITROUS]

Looks like the Nelson harness isn't quite made as an orignal replacement harness. Let me explain why you want the 5 pin relay and you can still put one in place of the 4 pin. The 5 pin acts to prime the fuel pump when the ignition is turned on and once the coil builds it releases the contact from 87a to 87 engaging the contacts. My only concern is if you tie 87 and 87a together that the fuel pump and prime will run togther and reduce pump life. You can try hooking up the fuel pump without the prime and not hook the wire to anything but it was put there for a reason. I'd go get a 5 pin relay like I posted a few days ago and put it in place of the one you currently have or talk to Allen and see what he's been doing. It might run fine without the prime wire and that's how Allen designed it, myself I always try to wire things up like they were from the factory. This is one reason I'd like to take a Nelson harness, make it plug and play and send it back to him so every thing including the ABS could be tied into it. I know it's not cost effective to make 5 different harnesses when you can have 1.