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Nippondenso Alternator Questiion #2499384
05/23/18 10:31 AM
05/23/18 10:31 AM
Joined: Oct 2006
Posts: 527
Mass.
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80fbody Offline OP
mopar
80fbody  Offline OP
mopar
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Mass.
Are the Nippondenso alternators out of a 90's dodge internally regulated or do we still use the regulator on the firewall like the original alternators? Not sure how to wire the one I purchased awhile back.

Re: Nippondenso Alternator Questiion [Re: 80fbody] #2499414
05/23/18 11:43 AM
05/23/18 11:43 AM
Joined: May 2003
Posts: 15,239
Florida
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scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
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Posts: 15,239
Florida
mine is a denso 120 amp external regulated on the 440 truck (not sure what it is from/double groove pulley)



I have a denso mini (smaller than my denso120amp) from 88 van/double pulleys that is external regulated. not sure what amp?

IIRC they ditched the VR on firewall in 89-93

if it has a serp pully I think those are internal regulated

swing by an autozone and have them toss it on the machine and test it. that will let you know for sure.

Re: Nippondenso Alternator Questiion [Re: 80fbody] #2499419
05/23/18 11:59 AM
05/23/18 11:59 AM
Joined: Sep 2011
Posts: 1,947
colorado
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savoy64 Offline
top fuel
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colorado
nope---serpentine means the computer runs it...

Re: Nippondenso Alternator Questiion [Re: 80fbody] #2499424
05/23/18 12:08 PM
05/23/18 12:08 PM
Joined: Oct 2006
Posts: 527
Mass.
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80fbody Offline OP
mopar
80fbody  Offline OP
mopar
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Joined: Oct 2006
Posts: 527
Mass.
Mine came with serpentine and v groove pulley in the box. I'll have to get some numbers off it and see if I bought a dud....

Re: Nippondenso Alternator Questiion [Re: 80fbody] #2499716
05/23/18 10:53 PM
05/23/18 10:53 PM
Joined: Jan 2008
Posts: 1,241
ILLINOIS
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volaredon Offline
pro stock
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ILLINOIS
the alt doesn't know or care if it is being controlled by an external VR or a computer. That same alternator was used for about 8 years, and it was regulated both ways. and serpentine pulleys can be swapped out for V pulleys and vise versa easily enough... done so more than once.

on the 91s (seems worst year for VR part of computer brain frying) vans/pickups/Dakotas, I have seen them all with the regulator wires dug out of the harness and a plain old Mopar VR wired in.

Re: Nippondenso Alternator Questiion [Re: 80fbody] #2499746
05/23/18 11:37 PM
05/23/18 11:37 PM
Joined: Feb 2003
Posts: 7,932
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Andrewh Offline
master
Andrewh  Offline
master
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Joined: Feb 2003
Posts: 7,932
you can wire it up with either the dual field vr from 74 and up or ground one of the field wires and use the single field wire vr.

I have mine wired up to a single field vr and just ran a ground wire to the plug.

the plug was the hardest thing to get. had to go to a yard to find one that wasn't clipped off.


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