J30RLCOA 1985 3 stator wires and bridge rectifier configuration question

Dewi

Cadet
Joined
Jul 29, 2011
Messages
23
I have a J30RLCOA 1985 and have just converted it to an electric start - starts immediately and runs OK - now I need to add a charging circuit -

there are three wires coming from the stator and I have not yet put a meter on them when she is running -

I have a bridge rectifier capable of carrying the current one of the small square type where they are filled with resin (it's 35Amp) -

now when using these previously I have just connected the two AC wires to the bridge and taken the pos & neg from this -

what the third wire is for I do not have a clue - can one of you enlighten me as to what I actually need to do to charge the battery - looking on ebay the rectifiers for Johnson's all appear to have 4, 5, and even 7 wires coming from them is this for control of the charging circuit ? -

do I need to purchase one of these or will my two AC input and + & - output bridge do?? -

could I use this
r1.jpg


turbo charger and rectifier
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: J30RLCOA 1985 3 stator wires and bridge rectifier configuration question

A three-wire alternator is three phase, and a two wire alternator is single phase (bridge rectifier). Here are the electrical schematics for both:
 

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Dewi

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Messages
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Re: J30RLCOA 1985 3 stator wires and bridge rectifier configuration question

Haffiman would you be so kind as to tell me which of those listed is the best for me - it doesn't say single or three phase :facepalm:
 

Dewi

Cadet
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Jul 29, 2011
Messages
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Re: J30RLCOA 1985 3 stator wires and bridge rectifier configuration question

does it matter the order the three wires connect to the rectifier on the three input spades ?? thank you
 

Haffiman

Commander
Joined
Dec 17, 2009
Messages
2,454
Re: J30RLCOA 1985 3 stator wires and bridge rectifier configuration question

does it matter the order the three wires connect to the rectifier on the three input spades ?? thank you
No.
But on the ones with wires, the wires are color coded for matching with the stator wires.
 

Dewi

Cadet
Joined
Jul 29, 2011
Messages
23
Re: J30RLCOA 1985 3 stator wires and bridge rectifier configuration question

thank you
 
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