[stanleyz]

If you find the switch is not the problem there is a way to test the internal seals which can be leaking without leaving and visible sign. You can find it on the Lippert web page. Or you can email me and I'll write it, It is a long write up. I changed mine on my 05 which I think are the same as yours. They can be rebuilt by most any hydraulics shop. Let me know if you need more info.