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Radio will not turn on (No sound, no display)

These are the basic things the radio needs to work properly:

  • Red and yellow wires must be connected for the radio to work.
  • Red: 12-volt ignition turns on and off with the key.
  • Yellow: 12 volts constant, does not lose voltage.
  • Black: Ground to a clean metal chassis point.
  • *Blue: Power Antenna output provides 12 volts to control a power antenna relay.
    If you do not have a power antenna, it should be capped off and not used.
  • *Blue/White: Amp turn-on lead is a low amperage 12-volt output. If you are not using an external amplifier, it should be capped off and not used.

*Note: Blue and Blue/White wires are low amperage and are designed to control internal relays within external amplifiers or power antennas. These outputs are not intended to power other devices. If turning on more than one amplifier or using these to power any other devises, please use the diagram below.

Here are some possible causes of no sound or display:

Possible Cause: Yellow wire (12 volts constant) is not connected or incorrect voltage.

Action: With a voltmeter, check to be sure the Yellow wire (constant 12 volts), is connected to the positive terminal of the battery or to a wire that has 12 volts at all times regardless of ignition position.

Possible Cause: Red wire (12 volts ignition/accessory) not connected or incorrect voltage.

Action: With a volt meter, check to be sure the Red wire (12 volts ignition/accessory) is connect to a wire that has 12 volts while the ignition is in the on accessory position.

Possible Cause: Black wire (ground) not connected.

Action: Be sure black wire is connected to a clean metal surface or a known ground.

Possible Cause: Fuse blown at radio or in vehicle.

Action: Check and replace fuses if blown.

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