SKU: 22791943809

Cummins Internal Voltage Regulator

Sale price$81.90 Regular price$91.00
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Description

Cummins Internal Voltage RegulatorInternal voltage regulator to set your charging to a set 14. 2 volts. Basically turning your Cummins alternator into a one wire unit. Great for engine swaps or when your dodge factory computer based voltage regulator fails. Does not work with Bosch alternator!!! Fits Denso Alternator 1989 2002 The 2001 have plugin instead of 2 small posts, can use exact same diagram just instead of orange green wires going to alternators post, they must be connected

Internal voltage regulator to set your charging to a set 14.2 volts. Basically turning your Cummins alternator into a one wire unit. Great for engine swaps or when your dodge factory computer-based voltage regulator fails. Does not work with Bosch alternator!!! Fits Denso Alternator 1989-2002 The 2001 have plugin instead of 2 small posts, can use exact same diagram just instead of orange/green wires going to alternators post, they must be connected to 2 pins inside the alternators plug.

Tech Questions:
I bought the Cummins alternator one wire voltage regulator and it seems to only work half the time, half of the time it’ll regulate at that 14 V that it’s supposed to be at and the other half of the time it goes all the way up to 17 to 18 V. I wired it up based on the diagram I was sent. I’m not sure if it’s a wiring problem or it’s an actual problem with the regulator.
ANSWER or possible solution:
Make sure the wire from the truck to the orange wire off our regulator is good.  A poor or high resistance connection  will cause the symptom you describe. 
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SKU: 22791943809

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Marlana Lupo
Grantham, US
★★★★★ 5
Awesome!!
Had a check engine light come on for cam shaft position. Did some research online about the specific code and found that I could be due to sludge in the engine. Added this and ran for about 30 minutes and then had the oil changed. The light never came back on and the engine is running smooth and quiet. Will definitely use again.
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Reviewed in the United States on April 5, 2026
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Discovery
Carnegie, US
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Great product
This brand is great. The car is running great
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Reviewed in the United States on March 4, 2026
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Wguinn
Lexington, US
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Well worth the money.
I use nothing but Wix filters; they are the best
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Reviewed in the United States on April 22, 2026
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José hernandez
Cuba, US
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Reviewed in the United States on April 23, 2026
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nanyeli monreal
Massapequa, US
★★★★★ 5
Trabaja genial
Muy satisfecho con este artículo cumple todas mis expectativas
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Reviewed in the United States on December 25, 2025

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