[shade67]

The electrical systems are actually a hybrid or morphidite 12/ 24 volt system. it has two batteries hooked in series, two alternators, one charges at 12 volts the second jumps that to 24 volts (actually around 28 volts). the injector pump and the glowplugs operate on 12 volts. it has bus bars on the pass side firewall that controls the voltages. it has a regular GM wiring harness that handles all the normal activities- lights, horn, engine control. and the addon military harness that runs on 24volts that controls the military lights, radios, and powers the love shack on the back (work hut). I worked in a national guard field maintenance shop. We were always fighting to keep those things running- they were considered obsolete by the regular army but the NG units loved them for running around! The wiring fuse blocks were known for melting from the troopies washing the floors with hoses over the years.