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Author Topic: 74 Wagon Wiring Diagrams  (Read 1294 times)

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Offline pintoguy76

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74 Wagon Wiring Diagrams
« on: June 05, 2013, 12:05:39 PM »
Getting ready to do a fuel injection swap on my 74 wagon. Currently has points type ignition and externally regulated alternator. I need to know how to rewire the car for an internally regulated alternator and where to connect the EFI harness to the car at.

Pin 1 (keep alive power) will go to the always hot side of the starter solenoid, but i'm not sure where to get the 12v in run and 12v in run/crank at.

Also for the alternator wiring, the regulator has 5 wires coming out of it, one to a condenser, two to the alternator and the other two I dont know where they go? One i assume is for the charging light but I dont know about the other one. Those two will need to be done away with or hooked up, but i need to know what they do and where they go to be able to do that.

Please help if you can!!

1974 Ford Pinto Wagon with 1991 Mustang DIS EFI 2.3 and stock Pinto 4 Speed
1996 Chevy C2500 Suburban with 6.5L Turbo Diesel/4L80E 4x2

1980 Volvo 265 with 1997 S-10 4.3 and a modified 700R4

2010 GMC Sierra SLE 1500 4x2 5.3 6L80E

Offline D.R.Ball

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Re: 74 Wagon Wiring Diagrams
« Reply #1 on: June 05, 2013, 09:36:41 PM »
Go to m/svo/3g etc. . Many places have the info for the swap. I'm getting ready to do the swap myself. I'm using a 130 3g from a mid 1990's Taurus and a pulley from oldfuelinjecti I'm keeping the v belt system because two belts are better than one if it's running the alternator and water pump. One belt on the serpentine system seems to be a high chance of failure but that might be just me. Plus I do not feel like changing any thing else. The belt I need might be a little smaller but not too much.