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Going from minimatic alternator to 70amp
https://www.ausmini.com/forums/viewtopic.php?f=2&t=88586
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Author:  Garagedefend [ Wed Feb 11, 2015 4:26 pm ]
Post subject:  Going from minimatic alternator to 70amp

Soooo I had the minimatic alternator in the old girl swapped out with a bnew 70amp one. (well my technician at work did)

battery light comes on a bit. But wont start. LOL what has he done? what should I check? did the standard minimatics still have positive ground? it had a radio in it previously that I took out.

I'll bung the old one back on tomorrow first and hope for the best. Then probably get an actual sparky to do it for me.

Is there anything I need to do before hand though? like change wiring over or what not?

Author:  Morris 1100 [ Wed Feb 11, 2015 4:45 pm ]
Post subject:  Re: Going from minimatic alternator to 70amp

Early Matics had a generator and positive earth. (though the polarity is easily changed)
Later Matics had an alternator and negative earth.

Author:  VulcanBB18 [ Wed Feb 11, 2015 5:51 pm ]
Post subject:  Re: Going from minimatic alternator to 70amp

Flat battery? :|

cheers,

Jacob

Author:  Garagedefend [ Wed Feb 11, 2015 11:36 pm ]
Post subject:  Re: Going from minimatic alternator to 70amp

How would I go about telling what mine is?

Author:  Garagedefend [ Thu Feb 12, 2015 5:05 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

Actually lol it's already got an alternator lol

Author:  peterb [ Thu Feb 12, 2015 5:56 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

Did you take generator off and fit alternator? If so, what did they do with generator wiring/regulator? Maybe problem is there?

Author:  Garagedefend [ Thu Feb 12, 2015 6:24 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

I'm not too sure what it had originally.

The alternator thats in it now is a lucas one.

Image

Image


not sure if you can see any detail in that. Thats what was on there and thats how it was wired.

Author:  Garagedefend [ Thu Feb 12, 2015 7:17 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

what was on there

Image

whats on now

Image

Image

Image

Image

Author:  peterb [ Thu Feb 12, 2015 7:23 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

so at the moment it does nothing?

Author:  Convertible Mini [ Thu Feb 12, 2015 7:29 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

Is the gear lever in Neutral?

Author:  Garagedefend [ Thu Feb 12, 2015 7:34 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

Lights come on (but he says he doesnt remember). no start. have not tried this morning. also told tech the inhibitor might have been on. will try when workshop is a little quieter

Author:  Garagedefend [ Thu Feb 12, 2015 10:42 am ]
Post subject:  Re: Going from minimatic alternator to 70amp

ummmmmmmmmmmm

it was the neutral inhibitor. LOL

Author:  Irish Yobbo [ Thu Feb 12, 2015 12:48 pm ]
Post subject:  Re: Going from minimatic alternator to 70amp

On a side note, you should have another cable running from the alternator to the positive terminal (the starter solenoid is a good place to run it). The original alternator was designed to run maybe 40amps max? If you run more current though those old wires they can heat up and do bad things. That's why the alternator has another terminal on it (I think it's the once covered by the black plastic in your picture). You should run a thick cable from there to the starter solenoid to be safe.

It's unlikely to cause issues as is, but if you are using any extra current, use the extra wire.

Author:  Convertible Mini [ Fri Feb 13, 2015 12:00 pm ]
Post subject:  Re: Going from minimatic alternator to 70amp

The new 70 Amp Alternators I sell come complete with fitting and wiring instructions and the extra load cable that is necessary.

Author:  Garagedefend [ Fri Feb 13, 2015 1:07 pm ]
Post subject:  Re: Going from minimatic alternator to 70amp

can i get the cable separately?

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