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Old 10-21-2010, 11:49 PM
DrunkFord DrunkFord is offline
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Alternator Wiring Diagram

81 Truck with a 5.0 - 60 amp alternator

Does anyone have or know the wiring diagram for the alternator?
Battery and alternator test good, but not enough juice to turn over.

I know... grounds grounds grounds, but i figure I should check this while wait for a jump. Bought the truck a few months ago and the wiring seems wrong.
Positive spiders out into about 4 different wires with no fusible link. I seriously don't see one, but i'm not too familiar with them either. They're all about 14 gauge wires but one looks like a 10 gauge that connects at the two shunts.
Off the positive of the alt, one goes to the starter solenoid, two go to the cab harness, and one goes to the volt reg's "A" terminal. The "A" terminal also has what I believe is the radio capacitor grounded off.
The "I" slot of the volt reg runs to the negative stud on the alt.
And the "S" goes to the cab harness.

..seems wrong, can/should i just ground the alternator to the block and chug-a-lug?
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Old 10-22-2010, 08:51 AM
DrunkFord DrunkFord is offline
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Any links I can check out?
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Old 10-22-2010, 10:55 AM
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JimsRebel JimsRebel is offline
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Here is a link

http://www.ford-trucks.com/forums/73...ml#post6072663
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1986 F150 XLT Lariat 4x4 300 C6, 9 inch 3:50, 235-15 tires, sway bars, DS2 w/ GM 4 pin and no computer; PMGR starter; 120,000 miles, 2nd owner
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Old 10-22-2010, 06:10 PM
DrunkFord DrunkFord is offline
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1981 Ford F-150
 
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Yeaaaaaahhhh... Sooo after -literally 3 days- of nothing but sticking my man man in the exhaust pipe and trying to make babies with google.. I got-r-done!

Some dude had a lot of info to help me out here, I'd read through this first:
Low Voltage - Alternator not charging battery - JeepForum.com

And then I hope this dude is blessed because I can't thank him enough for this post:
Low Voltage - Alternator not charging battery - JeepForum.com

Thanks all
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Old 10-22-2010, 06:16 PM
DrunkFord DrunkFord is offline
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1981 Ford F-150
 
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Location: Eastern Shore, MD
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And by the way, yes.. I messed up my voltage regulator's hook up because I took the socket off and directly hooked crimped connectors to my voltage regulator. I couldn't find anything else better that would fit into the socket at the time. Thought it was correct, but it wouldn't have made sense to me right at that point anyway.. But, now I know!
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Old 10-22-2010, 06:16 PM
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