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130 AMP alternator

posted by  jgk on  Thu Jan 26 23:49 CST 2012
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last visit: Sun Oct 12 09:43 CST 2014
[RELATED]

Hello all-

'93 940 wagon. Engine: Ford 5.0

Sadly, the original owner/builder passed away a few years ago and I have become a very grateful caretaker of this marvelous car. I have truly done my best to keep it in the best of shape but unfortunately never had the background of the original build required to do "Mods to the Mod."

Situation: The front bearing has failed on the 2G alternator. This setup had only 1 lead on the B+ output side.
Bought a PA Performance 3G alternator. It is installed with fused 2Ga leads to the battery.
RJM Injection Tech 3G Alternator harness is used to complete the installation.
All pretty straight forward to this point. Except for one 12 volt lead...

Peter- The green wire on the new 3G harness needs a 12 VDC source with the ignition switch in the "run" position.
Can you help me with the location/wire color to be used for my source (Back side of the IGN SW?).

Thanks for any help provided.

Jeff







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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    This is PG's old car, no? Good to hear that it is still running and still being improved on. I have some bits of info on it here and there, but I'm not sure if it's anything useful.

    The 3G is so much better than the 2G. Charging at idle is better, and they seem more reliable.

    As for exactly where to get the switched power, I can't help you there, but there are many switched sources to choose from, and you can really just use anything. I think that some people use one of the wires connected to the coil. I had a 940T, but I never did much electrical work on it, so I don't remember how it's laid out.

    Let us know how it goes.
    Greg
    --
    My homepage: http://users.rcn.com/gwong76/



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      Hi Greg- Yes, it's PG'S old car. I'm just the caretaker now. PG did all the mods and engineering.

      I was able to trace down the wire needed. It is an 18Ga Red, switched through the caution light in the instrument panel. We'll see how it progresses.
      The output numbers for the new alternator look pretty good on paper.

      I'll keep plugging away at it...

      Jeff

      I'll post some pics…



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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    I am wiring a 240/302 '00 Ford at the moment. My alternator was and is powered off a 30A RUN switched power fuse so I suspect that you are going to need to add a relay out in the engine compartment. I don't know about the 940 but the body to engine harness connector would be my location of choice to pick up switched RUN power. My RUN is on pin 8 of the 8 pin square connector in case that translates to the 940.



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      Thanks TestPoint. I'll start at the blue wire at pin 8. There could be something in place that was partially removed when originally converted Volvo to Ford.

      Let you know...

      Jeff



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