Hi John,
Don offers some sound advise.
Adding to that, check to see if the Sanicon can spin. It may be getting power but is locked-up, unable to spin. Place a flat blade screwdriver in the end of the unit as shown here, spin the motor by hand and see if it unjams or otherwise wakes up.
If the problem persists after spinning the motor, then check the fuse panel. The motor uses a lot of power so it will be a high amperage fuse.
If the fuse panel checks out, then I would crawl under the area of the Sanicon and disconnect the 2 wires down there. Check the connections for corrosion. Also test the source wires by either measuring the voltage or using a simple 12V light bulb tester to verify that 12 volt power is or is not present at that connection.
Our original Sanicon with it's original wire connections are shown here. The connectors are not sealed from the environment, hence water and winter road salt water can get inside and break the connection through corrosion.
With our 2007 PC, something inside me wants to say that the power to the Sanicon is sourced from the chassis battery, not the house batteries. With the house power shut down, the Sanicon may still work. If that is true, then the fuse would likely be located by the parking brake behind the kick panel there, in an in-line fuse socket.
Our 2007 PC is moth-balled right now. It is not easy for me to verify my shady thoughts about it. Maybe someone with an operational PC will verify or conclude otherwise today by shutting down their house power and see if their Sanicon still operates.
