Originally Posted by Danford50
how can I test it to see if it is working
Assuming we are talking the solenoid related to use/store switch - with unit unplugged from shore power - when switch is in USE - coach 12v lights should be ON - and when it is in STORE - coach 12v lights should be OFF..
You should hear an audible click which pressing the switch ONE TIME in each direction. (If you press USE twice in succession - you won't hear the click the second time...)
If you mean something else - please clarify.