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Posted on Aug 02, 2009

Wiring from and external regulator to an internal reg. alternator

I have a 1989 Ford f250 that I put a '93 motor. The '89 had an alternator with an external regulator, the '93 alternator has an internal regulator. I have the plugs for the '93 alternator. I dont know how to splice them in. A '93 wiring diagram would be nice but I cant find one. I need to know what wires to splice to do away with the external regulator.

1 Related Answer

night71

Lyle Siemens

  • 328 Answers
  • Posted on Oct 30, 2007

SOURCE: motorcraft alternator to regulator

Here is a generic wiring diagram that should work
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1990 Ford Econoline Club Wagon replacing alternator with internal regulator. How to bypass external voltage regulator that is on it now.

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How do I remove the alternator from a 93 ford bronco?


IDENTIFICATION

There are 4 different types of alternators found on the years and model ranges covered in this information:

  1. Rear Terminal, External Regulator, External Fan Alternator
  2. Side Terminal, Internal Regulator, External Fan Alternator
  3. Leece-Neville 165 Ampere Alternator
  4. Integral Rear Mount Regulator, Internal Fan Alternator

Rear Terminal, External Regulator, External Fan Alternator
This unit utilizes a separate, external electronic regulator. The regulator is non-adjustable. The rear terminal alternator was standard equipment on 1987 trucks, and can be found on some 1992 motor home chassis models equipped with the 7.3L diesel or 7.5L gasoline engine.
Side Terminal, Internal Regulator, External Fan Alternator
This unit was optional on 1987, standard on all 1988-92 models and standard on 1993-96 models equipped with the 4.9L and 7.5L engines. The regulator in integrated within the alternator body and is not adjustable.
Integral Rear Mount Regulator, Internal Fan Alternator
This alternator is standard equipment on all 1993-96 models equipped with 5.0L, 5.8L gasoline engines and 7.3L diesel engines (except the 1996 F-Super Duty models).
Leece-Neville 165 Ampere Alternator
This unit is optional equipment on some 1989-94 trucks and ambulance packages. A separate, electronic, fully adjustable regulator is employed in this system.
Mitsubishi 215 Ampere Alternator
This unit is found on 1996 F-Super Duty models equipped with the 7.3L diesel engine. The regulator is integral and the fan is external.


REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4



0996b43f8022502d.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 1: Disengage all wiring harness connections from the alternator



0996b43f8022502e.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Once it is unbolted, maneuver the alternator from the engine compartment



0996b43f8020d83e.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: Side terminal alternator



0996b43f8020d83f.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 4: Rear terminal alternator

  1. Disconnect the battery ground cable.
  2. Remove the adjusting arm bolt.
  3. Remove the alternator through-bolt. Remove the drive belt from the alternator pulley and lower the alternator.

Some engines are equipped with a ribbed, K-section belt and automatic tensioner. A suitable tool must be made to remove the tension from the tensioner arm. Loosen the idler pulley pivot and adjuster bolts before using the tool..
  1. Label all of the leads to the alternator so that you can install them correctly and disconnect the leads from the alternator.
  2. Remove the alternator from the vehicle.
  3. To install, reverse the above procedure. Observe the following torques:

    Pivot bolt: 58 ft. lbs. (78 Nm) Adjusting bolt: 25 ft. lbs. (34 Nm) Wire terminal nuts: 60-90 inch lbs. (6.8-10.1 Nm)
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1989 ford f250 engine swap 5.8

They are the same.The engine with the 5 speed has abushing in the crankshaft.
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