Product Description
If you are putting the 5.9 Diesel powerplant into a vehicle not wired or equipped for it, this is your answer - no external regulator, no wiring, no PCM, just the main power feed wire.
If you are replacing the stock alternator on your 1989-2002 Dodge Ram pickup with the 5.9 Diesel Cummins; this unit will eliminate the external regulator (or PCM) Note: when replacing the stock alternator on a factory equipped truck the check charging system/check engine light may illuminate as the PCM will be looking for a signal that no longer exists but does not affect charge voltage.
This unit and has a maximum output of 160+Amps, will produce between 80A to 90A at idle depending on whether the engine is gas or diesel and shaft speeds. This unit has our lifetime warranty.
We build Premium quality battery and crossover cables for this vehicle. The main battery charge cable options are complete cables with 200amp fuse to connect the new alternator to the main battery. The stock cable is known to be weak and under-sized, limiting the power and efficiency of the new alternator. If you want a different length email or call us, we have other options to substitute for you. The crossover cable is made to connect the B+ on dual batteries and is 80" long. The stock crossover cable is a known problem, and this resolves unequal charging dual batteries. Most customers report that in stock trucks one battery is under-charging, and the other is boiling and over-charging. Replace your crossover cable to resolve this. Using both premium cables will ensure maximum charge and efficiency with the new PA alternator.
Applications: 1989-2002 Dodge Ram with a 5.9L Cummins and anything with a 5.9 Cummins transplant
Customer Installation Video HERE 2025
Customer Installation Video HERE
We offer an optional W-Terminal or TACH pickup wire to this alternator. This option is only available on these “SE” Denso / dodge alternators that eliminate the PCM. When you select this option, we will provide a tach lead for connection to a diesel specific aftermarket tach. This is only available at the time of assembly and older units are not physically eligible for retrofit. The connection is simple, the wire is provided by us but does not need to be used if no tach is intended. This will not work with factory equipped tachometers or ignition-based tachometers, only a stator signal tachometer. The rotor has 12 poles, some calibration instructions ask this (tach shown is not included)
Tach image shown for illustration only, we do not sell tach or any gauges.
Some brands our customers have said work well:
Dakota Digital
Speedhut ; special order
ISSPRO R8586M
GlowShift
WARNING: California PROP65 Cancer and Reproductive Harm Notice www.P65Warnings.ca.gov
Product Videos
Custom Field
Product Reviews
62 Reviews Hide Reviews Show Reviews
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1 wire alternator
Product worked fantastic just like I thought it would highly recommend it to anybody with a charging system problem with the Dodge
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One wire alternator for First Gen Dodge
This upgrade quickly and definitively solved so many problems we had been having with our truck...bought it over a year a go...still going strong!
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One wire alternator
What a fantastic product came with instructions works perfectly Easy installation can't believe I didn't do this sooner Super consistent charge rate
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So far so good only time will tell
Good product saves you the headache
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Alternator
Fantastic product! Cured my charging issues in my Cummins swapped Chevrolet truck!
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Installation
Installed flawlessly have yet to wire and see how it performs but impressed as of now!
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Great company best customer service
Best alternator for a Dodge with a Cummins when the PCM no longer tells the alternator to charge bought one of these solve the problem if one goes bad all you do is call they take care of it hard to find a company like that anymore nice to know that they stand behind their product if I ever need an alternator for any of my other stuff definitely will be calling them
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Nice product
Installed this alternator on my 1992 W250. Very simple install, charges much better than the factory alternator-at a solid 14.7 volts. Puts out enough power that I can barely tell my grid heaters are running. Headlights seem brighter as well. I feel confident that my charging system is now as reliable as the cummins engine.
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Cummins 1 wire alternator
Best way to go if you have had trouble with your external voltage regulator in the past. Simple as can be to install with holes exactly where factory alternator goes and correct pulley. Little pricey but think of the long run. Charges great. Great product
