Lmtv battery box wires

[Micalight]

Hello gents, need assistance. Doin the two battery conversion on my BAE 1078 A0 and I need help identifying my cables. I have two tags, tl 39 and tl 10 I think. One lead goes to the starter. The other 3 go to the polarity box I believe.
What's positive or negative? The ground to frame is obvious. I'll post a pick.

 

[Ronmar]

well you made it relatively easy. TL10 is +24v to the starter solenoid. TL39 is +24 to the polarity protection box 24v batt terminal

of the 2 remaining cables. one is the main ground cable(TL4 going to the front of the starter motor via an instrument shunt(measures current) located near the polarity box(3 stacked metal plates with a large cable bolted to each end, 4-5" long), From the front of the starter motor there is a ground strap to the drivers frame that connects battery ground to the rest of the vehicle.

The last cable(TL99) is 12v going to the polarity protection box 12v batt terminal.

If you have a nato receptacle, its cables would connect to GND and +24 on the batteries

 

[Micalight]

well you made it relatively easy. TL10 is +24v to the starter solenoid. TL39 is +24 to the polarity protection box 24v batt terminal

of the 2 remaining cables. one is the main ground cable(TL4 going to the front of the starter motor via an instrument shunt(measures current) located near the polarity box(3 stacked metal plates with a large cable bolted to each end, 4-5" long), From the front of the starter motor there is a ground strap to the drivers frame that connects battery ground to the rest of the vehicle.

The last cable(TL99) is 12v going to the polarity protection box 12v batt terminal.

If you have a nato receptacle, its cables would connect to GND and +24 on the batteries

Is tl 99 pos or negative?
Thank you for all the info

 

[Ronmar]

TL99 would be +12V connected where the jumper cable that connects the two batteries in series(either terminal at the ends of the jumper cable, doesn't matter). IE: at either the 0-12v battery + terminal or 12-24V battery - terminal where the jumper is attached.

Ground is connected to the 0-12V batt - terminal and the pair of +24v wires are connected to the 12-24v battery + terminal...

There should be a diagram inside the battery box cover. going to a 2 battery configuration removes the left pair or the right pair from that drawing, or the pair toward the front of the truck, or the pair toward the rear of the truck in the battery box...

If in doubt, hand over hand the cables, there is a label on the side of the polarity protection device showing the 12 and 24v batt terminals, and the starter motor case ground(front end of starter motor housing ) and the starter solenoid 24v points should be obvious...

 

[Micalight]

TL99 would be +12V connected where the jumper cable that connects the two batteries in series(either terminal at the ends of the jumper cable, doesn't matter). IE: at either the 0-12v battery + terminal or 12-24V battery - terminal where the jumper is attached.

Ground is connected to the 0-12V batt - terminal and the pair of +24v wires are connected to the 12-24v battery + terminal...

There should be a diagram inside the battery box cover. going to a 2 battery configuration removes the left pair or the right pair from that drawing, or the pair toward the front of the truck, or the pair toward the rear of the truck in the battery box...

If in doubt, hand over hand the cables, there is a label on the side of the polarity protection device showing the 12 and 24v batt terminals, and the starter motor case ground(front end of starter motor housing ) and the starter solenoid 24v points should be obvious...

Thank yo

TL99 would be +12V connected where the jumper cable that connects the two batteries in series(either terminal at the ends of the jumper cable, doesn't matter). IE: at either the 0-12v battery + terminal or 12-24V battery - terminal where the jumper is attached.

Ground is connected to the 0-12V batt - terminal and the pair of +24v wires are connected to the 12-24v battery + terminal...

There should be a diagram inside the battery box cover. going to a 2 battery configuration removes the left pair or the right pair from that drawing, or the pair toward the front of the truck, or the pair toward the rear of the truck in the battery box...

If in doubt, hand over hand the cables, there is a label on the side of the polarity protection device showing the 12 and 24v batt terminals, and the starter motor case ground(front end of starter motor housing ) and the starter solenoid 24v points should be obvious...

Thank you Ron. I owe ya a beer or two. Of all I've watched and read, you made that much simpler.
Booya