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If the solar battery maintainers were originally installed by the U.S. Military in the vehicle they are 24VDC devices. They are connected to the same location as the end leads of the NATO plug. Just as shown in my diagram and the diagram found in the installation and operation instructions for...

Please refer to my previous electrical diagram: the M923A2 is a 24 VDC system. To use a solargizer system on this vehicle I would suggest purchasing 24 VDC units. Depending on the wattage these devices are rated for, you may want to use two of them in parallel to decrease the charging time and...

Please see the TM's as the 12 Volt lead is required for normal vehicle operations. The wiring diagram under the M923A2 passenger seat explains the connection point requirement.

Here are a couple of pictures from the old battery box. In a previous post I included the wire diagram for connecting the batteries in series to get your 24 volts; then paralleled them with another set of batteries to double up the cranking amps. Most of you should still have your battery wiring...

Here is a diagram of the battery connections. I purchased 25’ of #2 S.O. cable from the local electrical shop. This is the same size cable that is currently installed in the vehicle. The only difference is the cable the military uses has a heavy rubber hose over the copper instead of a thinner...

I will post the rest of the pictures tomorrow. I have the wire harness down and the connection terminals to reconnect the original leads to the truck.

Batteries: Go down to your local “Batteries Plus” and pick up four (4) 1100 Amp Duracell ProCell batteries for about $98 each. These have more than enough cranking amps to turn over a 5 ton and run your lights for a while when you forget to turn off the switch. As for the battery holder: I went...

I used some 1/2" angle iron and welded two sticks on the right & left (outside) of the box. This will serve as a better shelf for the cover to sit back on. The original box lid already had an overhang, so this worked out well to rest my new cover on - and also added a stick to the back (inside)...

The batteries are going to be located in the external cargo box on the passenger side. I have seen some postings and (well) made a better box. Remove the box and the mounting plate. Using a cut off grinder cut the cover off the box completely. I will get some better pictures of the engineering...

M923A2 Battery Relocation Project: This week I have been having some problems with my batteries not charging. I disconnected each of them and charged them manually. Found one of the original batteries was shot and not taking a charge. This caused the whole system to not charge properly. (My...