Simple LMTV battery question

[Awesomeness]

I just bought an M1078 LMTV, but don't have it yet (it's being shipped to me). I want to make sure I understand the batteries, so I can get it started when it gets here.

Are all 4 of the batteries 12V? And they are linked in two pairs in series (12v + 12v = 24, this configuration twice in parallel)?

Thanks!

 

[Duckworthe]

They are 6v and there is 4. Under the battery tray cover is a fantastic sticker showing the layout and all of the connections. on my truck, the front are linked to be 12v to power the trucks systems. The rear two are tied to the front two to generate 24v for the engine starter.

 

[Awesomeness]

I'll look for that sticker, when I get it.

So the truck is actually 12V (e.g. headlights, wiper motors, etc.), except for the starter?

 

[Duckworthe]

My truck is a 97. I can't speak for all of them. And I have heard that some are 24 volt lighting. But can conferm, my 97 is 12 for everything except starting circuit and dual output alternator.

 

[Awesomeness]

Thanks for that info!

 

[Awesomeness]

Thanks for that info!

 

[NDT]

They are 6v and there is 4. Under the battery tray cover is a fantastic sticker showing the layout and all of the connections. on my truck, the front are linked to be 12v to power the trucks systems. The rear two are tied to the front two to generate 24v for the engine starter.

Uh, no. All 4 batteries are 12 volt. Looking at the box, the front two are connected in parallel, the back two are connected in parallel, and the fronts are in series with the back for 24 volts.

 

[Duckworthe]

I am incorrect, They are 12v. Thank you NDT for the correction.

 

[Awesomeness]

Ok, thanks for the correction. Does the truck all still run on 12V then (except the starter)? Was that part correct?

 

[NDT]

Lighting is 12 volt, Starting is 24 volt. Transmission brain is 24 volt.

 

[Duckworthe]

On my 1997 that is correct.

 

[Awesomeness]

Thanks. Gotta love the military keepin' it simple.

 

[Duckworthe]

Don't JINKs yourself!

 

[coachgeo]

Lighting is 12 volt, Starting is 24 volt. Transmission brain is 24 volt.

and if you ever get one with engine ECU also ... wonder if they will be 24v brains too?

 

[Overdrive]

Congratulations on the LMTV!

There are a number of 24v functions on the truck. The diagram of the diodes, relays, and circuit breakers on the back of the power distribution panel is the best identification for both 12 and 24v.

OD

 

[bikeman]

Sticker you need.

 

[Derrickl112]

.

 

[NDT]

Is the A0 throttle position sensor also 24v?

Looking at Appendix F of the WTEC manual, the TPS seems to vary from zero to 4.7 volts depending on how much throttle actuation there is.

 

[Ronmar]

Is the A0 throttle position sensor also 24v?

On the A0, the TPS is a sensor for the transmission only. I believe NDT is correct that it is a 0-5V sensor...