I am going to 90% yes. On the right side of a Wizard chassis is a tag board where I believe the other secondary leads from the PT are secured. Kind of like how a JMP is done where the unused volatges go to turrets at the end of the board and the used voltages are live to the circuit through the jumper wire that goes from the common to the voltage needed.I have found on some older Marshalls the jumper was on a 110 volt when a 120 was also present. Could have been vice versa. I swapped the jump to the other and my PV went up quite a bit and sounded better in some cases.