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Denso upgrade prob #1850655
06/16/15 08:33 PM
06/16/15 08:33 PM
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MNobody Offline OP
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Must have done something stupid again, where should the sense wire be hooked up to? I fuse protected it and ran it to the starter relay,now i have power to the ignition and eveything else with the key off. Pull the fusr and everythings fine?
Thanks

Re: Denso upgrade prob [Re: MNobody] #1850779
06/16/15 11:17 PM
06/16/15 11:17 PM
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I ain't up on the Denso schematic but shouldn't the sense wire be switched 12V (not hot all the time?). I do have a Denso blem coming from 440 source for $25 & I'm gonna see if I can fix what ever ails it. Post what you find


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Re: Denso upgrade prob [Re: RapidRobert] #1850796
06/16/15 11:35 PM
06/16/15 11:35 PM
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Here is a post in the archives. If you scroll through, you will find a wiring diagram in the post. Should help and apply to any "3 terminal" or "dual field" alternator. As RR said, the "sense" wire needs to be an ignition switched source (either directly or through an ignition switch triggered relay would work as well).

http://www.moparts.org/Tech/Archive/elec/24.html

Re: Denso upgrade prob [Re: MNobody] #1851122
06/17/15 03:29 PM
06/17/15 03:29 PM
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cruzin Offline
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I ran both the "Sense and the Bat +" wires to the main lug on the starter relay. The alternator's "Ign" I ran to car's Ignition run wire at the bulkhead. Not using the "Lamp" wire coming off of the Denso alternator.

Last edited by cruzin; 06/17/15 04:30 PM.
Re: Denso upgrade prob [Re: MNobody] #1851129
06/17/15 03:39 PM
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Thanks guys, much appreciated. Looking around for a place to hook it under there, how about the switched wire to the MSD box? Should be able to sense something there eh?

Re: Denso upgrade prob [Re: cruzin] #1851131
06/17/15 03:46 PM
06/17/15 03:46 PM
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Originally Posted By cruzin
I ran both the "Sense and the Bat +" wires to the main lug on the starter relay. The alternator's "Ign" I ran to car's Ignition start wire at the bulkhead. Not using the "Lamp" wire coming off of the Denso alternator.


This is interesting. I just put a Denso alternator on my tractor and it had only three connections, ignition (or sense), the output (battery), and the idiot light. With this alternator if you don't switch the ignition wire, the battery goes dead. DAMHIK.


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Re: Denso upgrade prob [Re: 6PakBee] #1851178
06/17/15 04:35 PM
06/17/15 04:35 PM
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cruzin Offline
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Here is the pigtail for a Denso that Hughes has.

http://www.hughesengines.com/Index/produ...mp;partid=27112

Last edited by cruzin; 06/17/15 04:42 PM.
Re: Denso upgrade prob [Re: MNobody] #1851197
06/17/15 05:16 PM
06/17/15 05:16 PM
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Not all Denso's are the same, the Mopar version of the Denso wires just like a roundback/flatback Mopar alternator.


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Re: Denso upgrade prob [Re: MNobody] #1851294
06/17/15 08:22 PM
06/17/15 08:22 PM
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Originally Posted By MNobody
Thanks guys, much appreciated. Looking around for a place to hook it under there, how about the switched wire to the MSD box? Should be able to sense something there eh?


Sounds like a good spot...

Re: Denso upgrade prob [Re: MNobody] #1851374
06/17/15 10:18 PM
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Yeah 6pack, with it hooked like that theres power to the ignition drawing the juice. I had my kill switch off when i did all this last winter so i had no clue there was an issue. Sounds like an easy fix though i'll try tomorrow on mine, the battery charger will appreciate it i'm sure. Thanks again everyone!

Re: Denso upgrade prob [Re: MNobody] #1851375
06/17/15 10:21 PM
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OH, the denso i used is out of my scrapped 98 plymouth voyager

Re: Denso upgrade prob [Re: MNobody] #1851738
06/18/15 12:42 PM
06/18/15 12:42 PM
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Ok got the green wire with the tracer hooked to the msd switched wire, but still no charging. I hooked the solid green wire to the red wire in the harness that goes to the voltage regulator that i unplugged cause it was no longer needed oops it dead ended at the plug. Do i just jump the 2 terminals in the plug?

Re: Denso upgrade prob [Re: MNobody] #1852948
06/20/15 12:24 AM
06/20/15 12:24 AM
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Anyone

Re: Denso upgrade prob [Re: MNobody] #1853045
06/20/15 07:50 AM
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The alternator is not internally regulated. You need to connect the regulator wiring like stock, just change the terminals to fit the alternator. IIRC two small ring connectors and one large charge wire.


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Re: Denso upgrade prob [Re: John_Kunkel] #1853070
06/20/15 09:52 AM
06/20/15 09:52 AM
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Originally Posted By John_Kunkel

Not all Denso's are the same, the Mopar version of the Denso wires just like a roundback/flatback Mopar alternator.


The Denso I used had the internal regulator. If this is the stock '98 Mopar Denso John had the answer all along.


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Re: Denso upgrade prob [Re: MNobody] #1853135
06/20/15 12:32 PM
06/20/15 12:32 PM
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No kiddin i"ll plug it back in and try it

Re: Denso upgrade prob [Re: MNobody] #1853137
06/20/15 12:34 PM
06/20/15 12:34 PM
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I thought all denso's were internally regulated, shame on me

Re: Denso upgrade prob [Re: MNobody] #1853387
06/20/15 08:23 PM
06/20/15 08:23 PM
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Yeah still not working, got a fuzz over 12 volts showing on the voltmeter. Bout ready to put the old one back in.

Re: Denso upgrade prob [Re: MNobody] #1853410
06/20/15 08:54 PM
06/20/15 08:54 PM
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How do you have it wired?

altwiring.gif

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Re: Denso upgrade prob [Re: MNobody] #1853558
06/20/15 11:24 PM
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The green wire in the harness is hooked to the B. other wire is hooked to the switched wire for my 6al box, heavy black to the big lug. I have done the amp gauge bypass, installed a voltmeter and have a heavy jumper from the alternator straight to the starter relay with a 100 fuse wired in.

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