Electrical System Understanding

[coyotegray]

I'm working on acquiring a M1009 and have been reading up... It's been a long time...

Do I have this right that the electrical system is something of a hybrid. The starter and black out lights are 24v and the rest is 12v..?

Thanks,
Andy..

 

[1986Blazerk5]

The starter is 24v, everything else is 12v, the reason they made it 24v is so it can be jump started by another military vehicle using the slave cables, also the military radios are all 24v

 

[Warthog]

I'm working on acquiring a M1009 and have been reading up... It's been a long time...

Do I have this right that the electrical system is something of a hybrid. The starter and black out lights are 24v and the rest is 12v..?

Thanks,
Andy..

On a stock system the starter, glowplugs (not the controler) and the radio hookups are the only 24v items.

The blackout lights are 12v.

If you need some help with your purchase let me know.

Warthog

 

[coyotegray]

How is the military trailer wiring setup..? Relays..?

So.. I can use a standard Chevy trailer wiring T-connector harness...?
I will want to set it up with a civi 7-way RV connector...

Thanks,
Andy..

 

[tamecrow]

On a stock system the starter, glowplugs (not the controler) and the radio hookups are the only 24v items.

Warthog

I thought the controller was 24 volt and the glow plugs 12 volt.

 

[Ken_86gt]

Both are 12v. When converting to a 12v system, you don't bypass the controller.

 

[Crash_AF]

How is the military trailer wiring setup..? Relays..?

So.. I can use a standard Chevy trailer wiring T-connector harness...?
I will want to set it up with a civi 7-way RV connector...

Thanks,
Andy..

The trailer plug is 12V. Yes, you can tap in/use a T Connector harness to add a modern civvy trailer plug. Use a commercial harness for a pre-85 truck though.

The glow plugs are 12V, the resistor feeding them is supplied from 24V. The controller card CANNOT handle 24V and will die a smokey death if 24V is applied to it for very long.

Later,
Joe