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Old 06-15-2019, 03:08 PM   #10
scottyb
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E-Z-GO
 
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
Default Re: Ezgo TXT48 - A build thread

Okay I got the controller and solenoid installed.
XCT48500 control
MZJ400A soelnoid
Note the 2 diodes
3 amp suppression diode on the small terminals and a 6a regen diode on the big terminals. Both didoes are polarity sensitive. The MZJ solenoid is not.

You might say what does that mean? It means the MZJ solenoid does not care which small terminal we land our + & - coil activation wires on. But - the diodes are polarity sensitive. Electricity flows through the diodes in one direction and is absorbed or blocked in the other direction. Placed properly it will protect the system from voltage spikes created when the solenoid opens. Placed incorrectly it becomes a damaging short. Pay attention to the striped end, it goes toward the + side of the circuit it is protecting.
In this case the small + wire is yellow. And the battery cable on the solenoid is on the same side as the yellow wire in this particular installation.
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