'90 PU alternator

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Jun 5, 2008 | 06:21 AM

Blackdog471

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Joined: May 2008

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From: Zillah Washington

'90 PU alternator

The 1990 Yota PU I'm working on was missing the alternator. When it was remover they simply cut the wires..

On the back of the alternator I'm missing the 3 prong round plug. I need it with about 5" of wire. Where can I get one, or do one of you guys have one I could buy?

I do have the single heavy gage wire connected and have been driving this way. What is the function of the 3 prong plug that I'm missing?

Thanks

Jun 5, 2008 | 06:37 AM

mt_goat

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Joined: Nov 2002

Posts: 10,666

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From: Oklahoma State

Send Cadman a PM, he is taking his off for a 3.4 swap:
https://www.yotatech.com/50842617-post57.html

Jun 5, 2008 | 07:20 AM

mt_goat

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Joined: Nov 2002

Posts: 10,666

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From: Oklahoma State

Quote:

Originally Posted by Blackdog471

What is the function of the 3 prong plug that I'm missing?

Thanks

That was a good question, so I googled it and found this:
http://www.autoshop101.com/trainmodu...or/alt101.html

Quote:

'IG' is the ignition input that turns on the alternator/regulator assembly.
'S' is used by the regulator to monitor charging voltage at the battery.
'L' is the wire the regulator uses to ground the charge warning lamp.