Re: 36 volt ez go/ curtis controller wont move
First thing is to make sure the controller is wired correctly. (I'm pretty sure the way it is wired in the picture is wrong. J1 is KSI, J 2 & 3 are throttle)
Then make sure the needed voltages are present on the correct pins at the proper times.
KSI pin has to have B+ on it for the controller to power up.
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White wire: There is typically a heavy (10Ga) white wire from the battery pack's main positive terminal to the charging receptacle. Also, a reed switch bypass often ties to the main positive.
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Here is a Curtis 1204/5 manual. Lots of good info including controller theory of operation that can be generically applied to just about all DC controllers.
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