What's this plug game.
 

I am or was in the process of adding traction control to my ZT 190+ I fitted a replacement throttle body and the TC cable and actuator but it looks like there is no plug for the actuator but in my search I have found another unused plug and am trying to find out what it's for, it's connected to the loom that runs to the connector for the wheel abs and brake wear sensor has anyone any ideas?
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