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800.979.0122

Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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America's Oldest Speed Shop ®

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Alternator Wiring Harness

SAME DAY SHIPPING! Order within the next 4 hours 21 minutes and receive same day shipping

Specs
Overall Length:
8
Sold in Quantity:
Each
Notes
Not for use with one-wire alternators.
Alternator Wiring Harness

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

If you're hanging a common internally regulated GM alternator on your ride, you had better cough up the bucks for this problem solver. If you just wire-up the alternator with any old "parts store" plug you will have a nasty little surprise in store for you... the engine won't shut off!

When wired correctly the alternator will back feed juice to the ignition switch and keep your hot rod running. NOT COOL! This harness fixes that problem and will make you the hero of the drive-in.

This adapter plug does not work with "one-wire" alternators. It is not needed. This adapter plug works with GM alternators with the built-in regulator, typically from 1971 or newer cars and trucks, like our 91367163 or 91067150.

Customer Reviews

Rated 5 out of 5 by 4 reviewers.
RATING BREAKDOWN
4 reviews
5 Stars
4
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

#32
Verified Purchaser
Tahlequah,OK
Product Rating

great fix for the engine run on problem

May 04, 2012
Great product
Pros:
  • Easy To Install
Yes, I recommend this product.
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perk
Verified Purchaser
seattle
Product Rating

quick & easy problem solver

March 07, 2011
5 minute soultion to a problem the wiring harness company's do not warn you about
Pros:
  • Easy To Install
Yes, I recommend this product.
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off road racer
Verified Purchaser
PA
Product Rating

great product

September 12, 2011
very easy to install works well shuts my motor off everytime. great simple product.
Pros:
  • Easy To Install
Yes, I recommend this product.
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SPCLACLAIRE, RETIRED
Verified Purchaser
Carneys Point, NJ
Product Rating

Great Product

May 10, 2011
This is a simple product to use with very easy to follow directions. I installed it on my STREET STOCK and save $$$ instead of buying a 1 wire alternator.
Pros:
  • Easy To Install
Yes, I recommend this product.
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Product Q&A

2 questions : 2 answers

need to know how to hook up one wire chevy alt to a 1962 f100 need to know what I need to get it to work

1 answers
f100j
eureka mousa
October 04, 2014

need to know how to hook up one wire chevy alt to a 1962 f100 need to know what I need to get it to work

Answers

October 06, 2014
EricM
A one wire alternator will not need this harness. You will simply connect the charge post of your alternator to the positive side of your battery with a heavy gauge wire. That's all it takes to connect a one wire alternator.

ALT WIRING HARNESS WHERE DO YOU PUT THE END OF THE WIRING YELLOW WIRE I BOUGHT THIS PART AN IT CAME WITH NO INSRUCTION THANKS FOR ANY HELP

1 answers
HOTRODRON
BAK,CA
August 25, 2013

ALT WIRING HARNESS WHERE DO YOU PUT THE END OF THE WIRING YELLOW WIRE I BOUGHT THIS PART AN IT CAME WITH NO INSRUCTION THANKS FOR ANY HELP

Answers

August 27, 2013
Jason
The yellow wire on part number 91064100 has a one way diode to prevent feed back from the alternator to the ignition circuit. It would be hooked to the exciter wire from your ignition. If you have a Speedway harness and you look at the switch circuitry you will see the exciter wire and if on an OEM set up it will be the small wire going out to the alternator and goes into the two lead plug in on the alternator.
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