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Mean Green Alternator Installation In A 40

Discussion in '40- & 55-Series Tech' started by cruiser99, Dec 8, 2003.

  1. cruiser99

    cruiser99

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    Hi Everybody

    Just got me a 77 and this is my first tech question. It came with a 150A Mean Green Alternator in a box that I am trying install. The alternator has a pig-tail that terminates with 2 leads green connector that does not match the 2 leads connector on the vehicle and I can not tell how to make the hook up.
    I can tell from the vehicle wiring diagram that both come from the regulator and are marked E and F. F become hot (12V) when the ignition is on and E goes to some regulator internal (voltage regulator coil and some contacts) but on the Mean Green side I cannot tell at all.

    Does anybody have experience with this that cam land a hand?
    Also, thinking about it does the new rate of charge will fry the in-line Ammeter?

    Thanks,
    Doron
     
  2. CruisinGA

    CruisinGA

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    I can't help you with the volt reg wiring (there aren't any directions from Mean Green?), but it will definatly fry the stock ammeter, and wiring. You need to run a new heavy guage wire to the battery, bypassing the ammeter, and install an aftermarket voltmeter so that you can still monitor the charging system.
     
  3. Landpimp

    Landpimp

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    Yes it will fry your ampmeter. The MG's sold are 200amp, maybe yours in older?

    I have a Mean Green on my fj60, it was plug and play(except for running a bigger wire to battery)

    Here is the Mean Grean install instruction that came with with mine(200amp) it speaks about what to do with an external reg.

    [​IMG]
    [​IMG]

    for more info, look for what needs to be done to intstall a GM alt in a Cruiser, Mean Grean is the same(I think) Tech section has some links for info.

    John H
     
  4. cruiser99

    cruiser99

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    Thanks for the info

    Doron.
     
  5. Eric_FJ40

    Eric_FJ40

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    John:

    I see that the instructions warn that the vehicle "must not be jumpstarted with battery booster cables". Forgive me if this is a newbie question, but why? Is this harmful to this particular setup (with a mean green) or is there a reason that it should be avoided on any rig?

    Eric
     
  6. Landpimp

    Landpimp

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    [quote author=DobberzFJ40 link=board=1;threadid=8563;start=msg73376#msg73376 date=1070995727]
    John:

    I see that the instructions warn that the vehicle "must not be jumpstarted with battery booster cables". Forgive me if this is a newbie question, but why? Is this harmful to this particular setup (with a mean green) or is there a reason that it should be avoided on any rig?

    Eric
    [/quote]

    got me.........but I kinda was meaning to call MG and find out, I can't think of why?

    John
     
  7. Eric_FJ40

    Eric_FJ40

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    Thanks, John!

    Let us know what you find out.

    Eric
     
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