Big 3 on old alt.

[Bobby322 10+ year member]

So I only have like an 80 amp alt. on my '73 duster. The alt seems kind of different. It doesnt really have a positive post on it I guess you could say. I cant really explain it cause its not in front of me. But is it still possible to do the big 3 on an old alt? The alt is brand new, but its old style I guess.

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[Cabin_Pressure 10+ year member]

How does the + wire hook to the alt?

 

[funkyab 10+ year member]

you do not have an alternator on that car. it is a generator.

 

[funkyab 10+ year member]

at least from what i read on the internet that is the case.

 

[Bobby322 10+ year member]

okay so if its a generator what do i do?

 

[dman4486 5,000+ posts]

you do not have an alternator on that car. it is a generator.

it is considered an alt in the duster's case

 

[dman4486 5,000+ posts]

and it should have a pair of smaller wires (field and stator) and one larger one (B+) with a ring terminal on it IIRC

 

[Bobby322 10+ year member]

Yeah there are a couple of small wires that just slip on to it. Then there is this wire that I guess goes to the + and it has a ring terminal on it. It connects to this plug thing on the engine then continues on around the engine, I dont know where.

 

[Bobby322 10+ year member]

Also....when doing the big 3, can I have the engine to chassis ground, the same as the neg. batt. to chassis ground? Or should I make 2 seperate grounds?

 

[dman4486 5,000+ posts]

Also....when doing the big 3, can I have the engine to chassis ground, the same as the neg. batt. to chassis ground? Or should I make 2 seperate grounds?

I run the engine and battery grounds to the same point on the frame.