Power Distribution Module: Description and Operation

POWER DISTRIBUTION CENTER
The Power Distribution system for this vehicle provides a safe, reliable, centralized and convenient means to access distribution of the electrical current required to operate all of the electrical systems. At the same time, these systems were designed to provide centralized locations for conducting diagnosis of faulty circuits, and for sourcing the additional current requirements of many aftermarket vehicle accessory and convenience items.

The power distribution system for this vehicle consist of the following components:
- Fuses
- Fuse cartridges
- Fusible links
- Automatic resetting circuit breakers
- Relays
- Flashers
- Timers
- Circuit splice blocks
- Power Distribution Center (PDC)

All of the electrical current distributed throughout this vehicle is directed through the Power Distribution Center (PDC). The molded plastic PDC housing is located in the left front corner of the engine compartment, just rearward of the air cleaner housing and left of the battery.

All of the current from the generator cable connection goes to the battery through a 140 ampere fusible link that is secured with a nut to the positive battery cable terminal. The PDC houses up to ten cartridge fuses, which replace all in-line fusible links. The PDC also houses up to twelve mini fuses (blade-type), up to three full International Standards Organization (ISO) relays, and up to eight mini International Standards Organization (ISO) relays. Internal connection of all the PDC circuits is accomplished by an intricate network of hard wiring and bus bars.