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How to Wire a ZF Shift Solenoid

There are two wires required to connect a control system to a ZF shift solenoid for either FORWARD or REVERSE gear shifting.

The coil on the solenoid IS NOT polarity sensitive so the ground (-) and positive (+) can be connected to either terminal (#1 & #2 pictured below). 

The third terminal on the bottom is typically used as an EMF “shield” and is often times never connected.