2002 Holiday Rambler 12 volt power problem.
I have a 2003 Holiday Rambler coach with 12 volt problems. I did not check the water in the batteries, so the went almost dry. I filled them, charged them and all was okay. Today I went into the coach, no lights, nothing on the panel that shows fuel level. I cranked the generator and did not show any voltage on the panel. The slide outs work, but nothing else using 12 volts. I had a battery checked today and it checked ok. Now for my questions.
1. Is it possible that one of the batteries I did not check could be bad.
2. Can you disconnect the batteries, and hook up a battery charger to
the positive and negative leads going through the disconnect and
see if the power comes on in the coach, without harming anything.
I have a 2,10,50 amp charger.
Thanks for any help.
2003 40' HOLIDAY RAMBLER