A length of wire may have been provided and will be connected between the 2 screw terminals on the transformer and the blue screw terminal block located on the back of the Powermax+ CPU labeled "9 VAC". The blue screw terminal block can be removed for easier access by lifting straight up on it using a pair of needle nose pliers. There is no polarity for the ac transformer so it will not make a difference which wire connects to which terminal. The transformer will fail and require the purchase of a replacement if it is plugged in while making the connections.

Be very cautious, bare copper wires must not touch each other, the transformer will fail. While there is no danger to life or property, the fused secondary in the transformer will go open, making the transformer useless.