Awesome information. Greatly helped me find the issue with my '89 F-250. The person that owned it before me had gotten rid of the fuel injection/computer system and put it back to the good ol' carburetor system. The relay that you spoke of was done away with. I noticed 1 wire that was plugged into the old wiring plug. I have 1 yellow on one plug that is always hot and two yellows on the other plug. All is fused, so I'll be slicing them together. Thank you so much for your great adbice.