Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hello, my name is ***** ***** I am going to assist you with this.
You didn't give the model number of the genset (the model of the coach is no help at all), but I am assuming this unit is in the KY family.
If so, and that white and green wire are 12ga wires, then they are the neutral and ground from the stator. Both of them get attached to the ground lug under the controller.
This is why you are not getting power to the transfer switch - no neutral or ground circuits.
For safety, they really need to be connected directly to the ground lug.
I have never even considered attaching them anywhere else, but don't see why it wouldn't work. The problem would be that if you ever get a short in your coach, it could lead to damage to either the genset or coach if you do not get a strong bond to ground.
Was this what you wanted to know?