Answered: Shrink Tubing

Is it legal to use shrink tubing to cover up connecting ends of the motor wires (i.e. one end of an enxtension PWM that’s connected to a PWM side of the motor controller 29) to prevent it from disconnecting?

Thanks.

No, Shrink Tube is neither a VEX part or on the list of allowable “non-VEX” parts listed in <R7> of the VEX Gateway Game Manual. However as per you are allowed to use a small amount of tape for the purpose you’ve described.