Question about Raymarine St 4000 Wheel Drive E12093

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I have an older ST4000 AutoPilot and this summer the drive motor doesn't seem to function. How do I disconnect the wires to determine if I have power coming from the control head and what voltage show I see on the wiring.

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You can check it in 2 places:

1) the back of the control head
2) the motor itself. The wire plugs into the motor or the shaft coming off the wheel portion.

You should have approx. 12 VDC coming from the control head to the motor.

Posted on Jun 14, 2010

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