Chassis Switch not functioning

[egrbac]

I have a 2000 GS Class A. Last year on our last trip I could not start the motorhome without holding down the Chassis Switch. I replaced all batteries and charged them for the winter.
This spring i put all new batteries back in and once again, when I turn on the Chassis switch, nothing happens(No lights), but if i hold it down in the other direction and have someone turn the ignition, the motor home starts and runs fine.
I did check all fuses and connections in the electrical bay and made sure all battery terminals were extra clean this year.
What could be causing this?

[Yankee29588]

Replace the Chassis Switch Relay. You will find it under the drivers seat or left front most compartment.