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One wire alternator on B model mack

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I have a B77 Mack with a 335 turbo cummins can I put a one woe alternator on it looks like it has a Chevy style alternator on now if I can what amp size should I buy 

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When hooking up a one wire alternator on a truck with more then one battery ware do you hook the wire off the alternator 

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t

the starter seloniod or  the positive of the closest battery

Edited by mrgumby

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1 minute ago, mrgumby said:

to the positive of the closest battery

As long as the system has been converted to a Negative ground. There is, if needed a one wire Positive ground one wire  GM style alternator, I have a 120 amp  one on my B mixer.

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i was going to mention that about pos ground but i figured most trucks by now were converted to neg ground..everyone i know has.. an easy swap   wasn.t thinking so good point glad you brought it up

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3 minutes ago, mrgumby said:

i was going to mention that about pos ground but i figured most trucks by now were converted to neg ground..everyone i know has.. an easy swap   wasn.t thinking so good point glad you brought it up

Seems there is always a few that surface, like mine.

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also is it a twelve volt starter or 24   if its a24 then to battery not selonoid post

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I was unaware that early Macks were positive ground until I tried to hook up a Buick radio backwards in a late 60s R model 😁

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