Thor Forums

[Oneilkeys]

It is easy to check yourself if the coach and chassis batteries are disconnected or not. Some time after the engine has not run and the coach has not been plugged into shore power or on the generator, check the voltages of the coach and chassis batteries. The should be different. How different depends on how long since they have been charged and the load on each battery. Running 12v systems that are hooked up to your chassis battery will increase the difference you will see between the chassis and coach batteries. If the voltages are the same and remain the same, you have a problem Then start your engine, wait a few minutes and check the voltages again. They should now read the same - somewhere between 13.6-14.1v depending on how charged the batteries were when you started the engine. If they do, your system is working correctly - your batteries are hooked together and are both charging. When you turn off your engine, check the voltages again, several hours later, and they should again be different. Do the same thing while plugged into shore power and running your generator. The batteries again should be at the same voltage while being charged and slowly drift apart when the charging system is turned off. Dave you a trip to the dealer and them telling you your system is working correctly.