A PDM (Power Distribution Module) is a device used to replace conventional relays and fuses in a vehicle electrical system.

The Hardwire Electronics PDM takes inputs from physical switches or analogue voltages, and provides power to different electronic devices such as radiator fans, fuel pumps and head lights.

The current being drawn from each connected device is continuously monitored. If the measured current is too high due to a fault, the PDM switches off the respective output to prevent further damage to the wiring loom or the connected device.

The PDM can then retry the output to see if the fault has cleared.