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Old 11-19-2012, 10:14 PM   #1
Andrew James
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Fuel question Bronco vs F150

So, as some of you may know I am swapping a 1991 F150 cab on to a 1989 Bronco frame. The Bronco was orginally a fuel injected 300 with four speed auto trans. It now has a carb and a five speed. The F150 is 2wd and EFI 300 with a five speed.

I am swapping the motor, engine harness, dash harness and cab on to the frame. I will need a different fuel pump I spose since it has been swapped for a carb.

My question is, the truck has dual tanks and I intend to use the Broncos 33 gal tank with all the wiring from the F150. Will I have any problems or can I just drop cab in with dash and wiring, plug it into the firewall with engine harness and motor and still be golden?
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1996 Ford Bronco Eddie Bauer 5.8/E4OD EFI
1978 Ford Bronco Ranger XLT 6.6/C6
1986 Nissan D21 Hardbody 2.4/5speed TBI
2000 Hyundai Tiburon 2.0/5speed
1984 Kawasaki ZN700 LTD
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Old 11-20-2012, 01:49 AM   #2
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At the very least, you'll need the blockoff plate used on single-tank pickups in place of the fuel tank (Bronco rear window) switch to complete the circuit. But you'll probably find a few conflicts in the firewall connector, and the frame harness connectors.
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Old 11-20-2012, 02:31 AM   #3
Andrew James
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For the connector conflicts, what do you suggest?

The Bronco was EFI but the under dash wiring has been hacked completely and so has the engine harness. Hence, my unmolested F150 and its wiring...
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1996 Ford Bronco Eddie Bauer 5.8/E4OD EFI
1978 Ford Bronco Ranger XLT 6.6/C6
1986 Nissan D21 Hardbody 2.4/5speed TBI
2000 Hyundai Tiburon 2.0/5speed
1984 Kawasaki ZN700 LTD
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Old 11-20-2012, 11:48 AM   #4
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Repinning them; pull out the red locks, move the wires so they match, and lock them in.
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Old 11-20-2012, 09:27 PM   #5
Andrew James
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You have the schematics in your collection somewhere?
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1996 Ford Bronco Eddie Bauer 5.8/E4OD EFI
1978 Ford Bronco Ranger XLT 6.6/C6
1986 Nissan D21 Hardbody 2.4/5speed TBI
2000 Hyundai Tiburon 2.0/5speed
1984 Kawasaki ZN700 LTD
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Old 12-20-2012, 11:26 AM   #6
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I am a n00b about this, I have the motor and transmission ready to drop in the Bronco frame but now I'm looking at the wiring and the frame/chassis wiring connectors are different as you said. I mean they'll fit but different wires and in the case of one, a different color connector. I am unsure what I do really? Repinning? How do I do that? Can I just take the F150s wiring from the chassis and use it on the Bronco? I do not care about the rear window switch anywhere in the wiring, so not worried on that.
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1996 Ford Bronco Eddie Bauer 5.8/E4OD EFI
1978 Ford Bronco Ranger XLT 6.6/C6
1986 Nissan D21 Hardbody 2.4/5speed TBI
2000 Hyundai Tiburon 2.0/5speed
1984 Kawasaki ZN700 LTD
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Old 12-20-2012, 12:28 PM   #7
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I'd buy the wiring diagrams for the two years and go from there myself. ;)

But you might get away with going to Autozone's website and signing up.
Fill out the information and save the vehicles in their data base then type
_wiring diagram_ in the search window.

If you got a printer you can print 'em out. :)

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Old 12-20-2012, 01:11 PM   #8
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Take ONE connector, and ONE wire in that connector. Use any wiring diagrams you can access to find out what it does, and if your truck will need it. If you need it, make sure it goes where it's supposed to on both sides, then move to the NEXT wire in that connector. When you run out, move to the NEXT connector, and repeat. When I converted my Bronco from '83 carb to '95 EFI, I used only the Haynes manual. Same when I built Frank's '75 Bronco. When I converted my CV from '94 EEC-IV to '00 OBD-II, I made this chart in Excel from the Ford EVTMs:



Check Al's site for online manuals.
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Old 12-20-2012, 11:56 PM   #9
Andrew James
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OK, thanks Steve and Alvin!
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1996 Ford Bronco Eddie Bauer 5.8/E4OD EFI
1978 Ford Bronco Ranger XLT 6.6/C6
1986 Nissan D21 Hardbody 2.4/5speed TBI
2000 Hyundai Tiburon 2.0/5speed
1984 Kawasaki ZN700 LTD
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