1996 M1097A2 Self induced charging issue

[DFink]

Quick back story.... Moving the batteries under the hood, they are still sitting/ hooked up in the passenger side. Military dash mount has been removed. Gauges, run/start switch, lights switch all are hanging loose. Started the truck the other day and the charger is maxed out. I know I either have a short or a wire not connected.
I am trying to figure out the FIELD and SENSE wire. Thanks for the help!!!

 

[TOBASH]

TMs are free and contain wiring diagrams.
They are located above in the stickies AND on the main Steel Soldiers index page in a TM section.

 

[Retiredwarhorses]

Quick back story.... Moving the batteries under the hood, they are still sitting/ hooked up in the passenger side. Military dash mount has been removed. Gauges, run/start switch, lights switch all are hanging loose. Started the truck the other day and the charger is maxed out. I know I either have a short or a wire not connected.
I am trying to figure out the FIELD and SENSE wire. Thanks for the help!!!

if a gauge is maxed out, you have a wire disconnected, the voltage gauge only has 2 wires, 24v and ground, use a multimeter
to determine your true alternator output.

 

[DFink]

Finally, I have a chance today to check some voltages.

Key on engine not running
+14 V 13.5vdc
AC 0vdc
Ign 24.5vdc

Engine running
14 V 17vdc
AC 13vdc
Ign 32vdc

I've went through the wiring and haven't found anything obvious yet. Tested the alternator and regulator with the Niehoff PDF and it looks like everything is okay.

 

[Retiredwarhorses]

Finally, I have a chance today to check some voltages.

Key on engine not running
+14 V 13.5vdc
AC 0vdc
Ign 24.5vdc

Engine running
14 V 17vdc
AC 13vdc
Ign 32vdc

I've went through the wiring and haven't found anything obvious yet. Tested the alternator and regulator with the Niehoff PDF and it looks like everything is okay.

32vdc on the IGN? You have a bad regulator
17vdc on the 14v Tap? Bad regulator
AC is a signal….not voltage.

what is the running battery voltage? I would venture to guess 32vdc, same as IGN…. bad regulator.

 

[DFink]

Yep batteries running voltage is 32. I guess it is time to find an inexpensive regulator or start looking at converting to 12v

 

[86humv]

Yep batteries running voltage is 32. I guess it is time to find an inexpensive regulator or start looking at converting to 12v

I have tested N3135 regulators for the 200 amp Alt. available.

 

[DFink]

At the going rate for a tested/known good regulator I can buy a 12vdc alternator and starter. I know there is a lot more to it but right now I am weighing my options

 

[86humv]

At the going rate for a tested/known good regulator I can buy a 12vdc alternator and starter. I know there is a lot more to it but right now I am weighing my options

Reg is 250 plus ship.

 

[DFink]

I have tested N3135 regulators for the 200 amp Alt. available.

Reg is 250 plus ship.

Thanks may end up buying one.

 

[DFink]

Pulled the regulator today and cooked it. Took les than 10 minutes to dig down this far.

 

[Mullaney]

Pulled the regulator today and cooked it. Took les than 10 minutes to dig down this far.View attachment 943331View attachment 943332

.
Yep... Sad to see it in that condition. It had been building for a long time.

 

[Retiredwarhorses]

At the going rate for a tested/known good regulator I can buy a 12vdc alternator and starter. I know there is a lot more to it but right now I am weighing my options

GL with all that…going 12v’s is a PITA at best, you will need do a bit more than just an alternator and a starter.

 

[DFink]

GL with all that…going 12v’s is a PITA at best, you will need do a bit more than just an alternator and a starter.

Yes, I understand there is more than an alternator and starter.
I made a list a few years ago for an '86 M998 I was rebuilding, no clue where it is now.

 

[DFink]

To get the truck running I will most likely buy a regulator from 86humv, but I am going to try to remove the potting compound on mine.

 

[DFink]

Reg is 250 plus ship.

Are the ones you have the dual voltage version? If so let me know shipping to Roanoke Virginia 24019 and how to pay.

 

[86humv]

.

 

[86humv]

Are the ones you have the dual voltage version? If so let me know shipping to Roanoke Virginia 24019 and how to pay.

Yes