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Old 04-15-2002, 11:14 AM   #1 (permalink)
SPR
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Wiring a GM Altenator

I've dropped in a Buick 3.8 into my 85 PU. Can someone tell me which factory Toyota wire to hook up the a GM alternator? The Toyota alternator wiring harness has a red, black, yellow, and two white wires. One white wire is larger than the other and bolts onto small post located on the driver's fender.

TIA.
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Old 04-15-2002, 12:04 PM   #2 (permalink)
 
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The alternator is very simple to wire. Do a search in the Toy and General 4x4 sections. There is a very good write up on it but I don't have the link anymore. I used those instructions when I did my swap.
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Old 04-15-2002, 12:35 PM   #3 (permalink)
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The magical SEARCH button has found these

https://www.pirate4x4.com/forum/showt...tor+AND+wiring

https://www.pirate4x4.com/forum/showt...tor+AND+wiring
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Old 04-16-2002, 12:53 PM   #4 (permalink)
SPR
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BTT,

I search the net for wiring the GM alternator to the 85 Toy. There is a lot of variation and some conflicting information.

My GM Alternator has the large bat. post, a two small male posts. A plug with two female connectors attaches to the two small male posts. Out of the clip runs a red jumper wire routed to the large bat. post and a brown wire which is attached to nothing.

Can someone with experience please tell me were to route the following Toyota from the original Toyota alternator wires:

16 gauge white wire - ??
16 gauge yellow wire Charge indicator
18 gauge red wire Hot when engine is running

I figure the 10 gauge white wire connects to the battery lead, and the 16 gauge black wire connects to the housing of the alternator - however it seem like the alternator should be sufficiently grounded through the mounting bracket.

TIA,

SPR
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