Testing voltage on an Alltrax controller

[muskydawg]

I put an alltrax 400A controller in my wife's G19, and the cart isn't working. The solenoid won't pull in, it seems like the cart is completely dead. I was going through, checking voltages and troubleshooting and found something that doesn't seem right. The solenoid is supposed to be battery +. But when I connect my voltmeter to the small screw on the solenoid and the negative on the batteries, I get zero volts. When I connect it to the positive on the batteries and the small screw, I measure full battery voltage. Would this not make the voltage at the solenoid battery -? It is the same when I measure the B+ pin on the controller.

If this is correct, why is the polarity reversed?

Thanks for your help.

[ma_tty_d]

from what i understand, one side of the solenoid is connected to positive directly, like you stated, and the other side connected to negative controlled by the controller. you should read 48V on the positive side of the solenoid, regardless if the solenoid was engaged or not. but if the tow/run switch was in tow mode then you would see 0v at the positive side on the solenoid. hope this helps! Cheers, Matt