Here is my theory:
Ground/negative juice comes in through the connector and is brought directly to the winch motor housing and attached to the terminal "winch motor ground". The entire carriage is "lit-up" with negative juice and is common with the frame of the vehicle.
From there, the negative juice is picked-up in the solenoid housing where a wire likely runs from a ground into the solenoids. The solenoids also have positive juice coming into them as well. The solenoids then "dance" their connections (via the remote switch) to feed the winch motor juice in an according polarity to produce a pulling or pushing action.
The fact that the "A" terminal has a negative reading at rest would indicate that the positive is switched and would be fed to the F2 terminal when triggered. When the winch works in the opposite direction the solenoids act to lift the negative "off" terminal A and instead apply it to terminal F2..while at the same time applying positive juice to terminal A. Viola'
This all makes excellent sense to me, it follows. What do ya think???
While the winch motor is isolated electically from the chassis/carriage in order to move in both directions, the carriage is still negatively charged and grounded.
We're both right. right?
|