Audio Control Relay: Description and Operation

CIRCUIT OPERATION
This relay is located in the junction block and used along with the radio choke to control the switched battery feed to the amplifiers on the speakers.

Power for the coil side of the relay is supplied on circuit X60. This circuit connects from the radio to the coil side of the relay and is HOT when the radio is ON only.

Ground for the coil side of the relay is supplied on circuit Z1 and terminates at the left side cowl.

Power for the contact side of the relay is supplied on circuit F62. This circuit is protected by a 20 Amp fuse located in cavity 7 of the junction block.

Battery voltage for the fuse is supplied on circuit A6. This circuit is HOT at all times and protected by a 40 Amp fuse located in cavity 6 of the Power Distribution Center (PDC).

When the contacts in the relay CLOSE circuit F62 connects to circuit X1. Circuit X1 connects from the relay to the radio choke.