I’m using the RJM harness and it splices into the factory harness in the manner is safe d to do it. All of the engine bay harness is RJM.
I will check that shortly.
I think I got it. I chased and chased wires tonight. Finally found the green wire under the dash. It seems to have somehow gotten a fuse that was just barely letting voltage through to the low pressure pump. I think the filament was corroded or something. It took digging and moving stuff to get to that additional fuse box. Oddly I was remembering correctly. Low pressure pump does run constantly with ignition. I talked to wild horses and Bc broncos who helped me, what I thought was ten years ago, but turns out to be closer to 15. I wired the low pressure pump the way they both say to do it in their instructions. The fuel accumulator just lets any excess gas return to the tank. Supposedly this helps with vapor lock. I’ve never had vapor lock so I will probably change this wiring in the future when I add the new wiring harness this summer. But I swapped out that fuse, chased the wire back to the rear pump, and it checks perfectly for voltage now. Bronco runs! It might not be the safest way to run that rear pump, but they said they still send the same wiring diagram out with them to this day. So it’s worked for 15 years and then just randomly decided to poop. I was letting myself be overly complicated in the solution. I was thinking it was a relay or something, when it was really a bad fuse buried under the dash. Also not recalling for sure about the rear pump running constantly. I kept hearing that that was impossible and such. Oh well. Memory did work, I just doubted myself. I appreciate everyone’s help immensely. I am thinking I may go the simpler route next year and get an in tank pump and different tank. But that’s a lot of money, when this has worked for so long. Thank you again everyone.
