Buggies Gone Wild Golf Cart Forum - View Single Post

biphase · 07-15-2021, 08:47 AM

1. The solenoid should show an open circuit between the large terminals when it is not energized so your reading appears to be correct. Also, 200 ohms between the small terminals is correct as well. if you put 36 volts across the small terminals the solenoid should click and the resistance between the large terminals should go to zero ohms. The cart cannot run if the solenoid is open because all current to the motor and the controller must first pass through the solenoid.

2. As I stated in a previous message:

"The B+ cable from the battery should connect to one of the LARGE terminals on the solenoid. The other LARGE terminal on the solenoid should connect to the B+ blade on the controller"

When you say that you found a "small black cable going from the solenoid to the controller" that was on B+ and you moved it to B- are you referring to a small wire that goes from one of the SMALL terminals on the solenoid to B- on the controller OR are you referring to a heavy duty cable from a LARGE terminal on the solenoid to the controller?

3. It is impossible for the motor to run if the solenoid is not closed. Also, it is impossible for current to flow if there is no return circuit to the B- terminal of the battery pack. I do not understand how you can say that you remove the connection to B- at the battery and the motor still runs. That is not possible, there must be some return to B- or you are getting free energy from somewhere.

07-15-2021, 08:47 AM	#27
biphase Gone Wild Join Date: Jan 2009 Location: Ocala, FL Posts: 384	Re: Melex 252 Curtis controller 1204 bad? 1. The solenoid should show an open circuit between the large terminals when it is not energized so your reading appears to be correct. Also, 200 ohms between the small terminals is correct as well. if you put 36 volts across the small terminals the solenoid should click and the resistance between the large terminals should go to zero ohms. The cart cannot run if the solenoid is open because all current to the motor and the controller must first pass through the solenoid. 2. As I stated in a previous message: "The B+ cable from the battery should connect to one of the LARGE terminals on the solenoid. The other LARGE terminal on the solenoid should connect to the B+ blade on the controller" When you say that you found a "small black cable going from the solenoid to the controller" that was on B+ and you moved it to B- are you referring to a small wire that goes from one of the SMALL terminals on the solenoid to B- on the controller OR are you referring to a heavy duty cable from a LARGE terminal on the solenoid to the controller? 3. It is impossible for the motor to run if the solenoid is not closed. Also, it is impossible for current to flow if there is no return circuit to the B- terminal of the battery pack. I do not understand how you can say that you remove the connection to B- at the battery and the motor still runs. That is not possible, there must be some return to B- or you are getting free energy from somewhere.