Power Supplies

The following diagram shows the recommended wiring arrangement for the power supplies. The following key points are worthy of noting:

·The switch labelled ‘ignition switch’ is usually the key. The wire that is used to turn on the main relay should be energised when the key is in the ‘ON’ position. Do not use a source that provides power when the key is in the ACC position as these are typically disconnected while the starter motor is being cranked.

·Each relay uses it’s own fuse. Ideally the fuses should be located as close to the battery as possible to minimise the length of unfused wiring.

·When the main relay is turned off all other relays will turn off. However, the high current supplied by the other relays is NOT drawn through the main relay.

Power and Ground Wiring