Mudlord...That looks like the identical switch that came with my new Venom 3500.. But unfortunately the switch itself is pre-wired. The only wires comming off of the actual switch is a ( red ) wire going to a " hot ", and 2 ( green ) wires with male and female connectors that go the contractor... I will see tomorrow if there is a screw on the back of the switch allowing me to trace the wires for you.. I will have to get into the shrink tubing to find out.