Distribution Terminal +54

Distribution Terminal +54:

Operation

The positive supply is taken from battery 1 across distribution block 75 to:

the contacts (terminal 30) of ignition switch relay 21

terminal 30 of ignition switch 20 and then on to the coil of ignition switch relay 21

When the ignition switch is set to the drive position, terminals 30 and 54 of the ignition switch will be interconnected. Current will then flow through the coil of ignition switch relay 21 across the 29-pole connector 152A, and the relay will be energized. The relay contacts will close, and current will flow through the three distribution blocks 192 to fuses 5-13 in electrical distribution box 22. On the 1985-86 models, fuse 4 will also be supplied.

The contacts of horn relay 68 will also be energized when the ignition switch relay has been energized.

Fault-tracing hints

1. Check the battery voltage.

2. Check the terminals of distribution block 75, and check that terminal 30 of ignition switch relay 21 is live.

3. Set the ignition switch to the drive position and check that ignition switch relay 21 operates. Terminal 87 of the relay should then be live.

4. Check that fuses 4-13 in electrical distribution box 22 are live.

5. Check the relevant wiring.