Thom. You originally posted in a way that implied it was the PTO that had six wires, instead of the PTO SWITCH. We don't read minds. Your PTO has two wires. Your PTO SWITCH has six wires.The PTO switch connector has 6 spades, the PTO clutch connector has 2 spades.
The wiring diagram is wrong.On my mower,the wire connector at the PTO
has 6 wires on it.