89bronco89!
New member
Now before everyone scalps me about this I am wanting to do the switch. I know it might be dumb for power and such but it’s what I want. lol. Can some let me know about any major things or has a step by step? Thanks
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I’m an idiot! Sorry. I’m working on an 89 Bronco.This is in the 78-79 section. which would not have been EFI.
what are you working on?
Engine harness comes off by disconnecting I think 4 round connectors on driver fender well. One of those connectors has a bigger than the others red wire, that's your power for distributor/ign box (I used hei), pull that wire out of engine harness. Your gr/rd wire from your tfi module is the tach signal, pull that out of engine harness. Pull your ac compressor wires out of engine harness to keep ac. I used my stock fuel pumps and just added a return style regulator. I de-pinned the fuel pump ground from the ecm connector and hooked to constant ground so when the key is on the fuel is on, there is a bigger black ground wire in one of the connectors. I soldered the end of an unused wire to the ecm ground wire and re-pinned it to fender well connector . Put female spade connectors on power and tach wire and hook to distributor/ign box. I de-pinned one of the round connectors on fender well and re-pinned the wires I used to just one connector because the power, ac, and tach wires go into 2 or 3 different connectors on the fender well just to clean it up. Aside from collecting all the parts that's pretty much it as far as wiring. Throttle cable and kickdown I bought ebay lokar knock off. Stock cables are way too long. You could probably hack something together but I chose not to.Now before everyone scalps me about this I am wanting to do the switch. I know it might be dumb for power and such but it’s what I want. lol. Can some let me know about any major things or has a step by step? Thanks
Thank you so much for the info on that. I just want to make sure I am doing it right. I have a carb and intake off an 80 302. Is this ok to put on? I know the lokar tv cable needs to have a special bracket but is it necessary to buy a fancy holly carb and such.When you unhook those connectors on the fender well literally every wire on top of the motor will come right off in one big harness. Carbed intakes have no provision for injectors and since you aren't using them anyways they come off as well. Forgot to mention in previous response if you are using stock coolant and oil pressure gauges you need to pull those wires out along with the a/c wires. I used aftermarket gauges so didn't use them. I actually cut the ends off the the fuel rails and used the fittings to attach new fuel lines and regulator to stock feed and return lines on truck. At this point the computer is literally doing nothing so you can either leave it in there or take it out. I took it out in case I want to sell it or use it on another vehicle.