No charge to auxiliary battery
Hi all. I recently purchased a AGM battery in hopes of it lasting a long time in my 21ft 1978 Chevy Itasca class C. I've been slowly remodeling the interior and while doing so, I've been using the cab...
Forum Discussion
You need to get the battery charged ASAP; 10V is very, very low, and it may already be more or less damaged. A standalone car battery charger would work if you don't have something else handy (like a working converter/charger—and if it's the original 1978 converter/charger, it may well be not working or not all that effective as a charger if it is working).
As for why it wasn't getting any charge while driving, it's hard to suggest exactly what might be going on without a bit more information on the electrical system. Broadly speaking, the vehicle chassis and house ("aux") electrical systems are isolated from each other most of the time, with a solenoid switch or some other device to connect them together when the engine is running to charge the house battery. You apparently have (or at least think you have) some manual switch to do this, I take it. Whatever the system, it's a matter of tracking down the wiring for it and verifying that it goes where it should, that any fuses are not blown, that the switches and relays and stuff are all working, etc.—standard electrical system troubleshooting.
As for why it wasn't getting any charge while driving, it's hard to suggest exactly what might be going on without a bit more information on the electrical system. Broadly speaking, the vehicle chassis and house ("aux") electrical systems are isolated from each other most of the time, with a solenoid switch or some other device to connect them together when the engine is running to charge the house battery. You apparently have (or at least think you have) some manual switch to do this, I take it. Whatever the system, it's a matter of tracking down the wiring for it and verifying that it goes where it should, that any fuses are not blown, that the switches and relays and stuff are all working, etc.—standard electrical system troubleshooting.
