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The Ph20-30A comes with a additional power lead on the back of the
Comfort Control
to attach a remote or external diagnostic light. On some applications, it is necessary to
monitor the heater operation from outside the vehicle. This circuit will handle
1 amp
maximum
. Attach one power lead (positive) to the connector on the
Comfort Control
. The
negative lead may be attached to chassis ground or heater ground. Use 20ga wire when
making connections.
The remote light circuit operates on the inverse of the red LED. That is to say that
when the red LED is off the remote light is on. This allows you to monitor normal heater
operation. For example, when the heater is turned on, and is running normally the remote
light will be on. When a fault code is flashed, the remote light will blink along with the red LED.