Originally Posted by sobberman
plugged in get yellow light and 12.0 volts
Plug in - switch set to 'Use' and let it sit overnight...
You should end up with fully charged batteries (both coach and chassis).
If not, then check the output of the converter...
To measure this, plug in, set switch to 'Store' (don't want to read battery voltage in this case) - and measure on the output terminals of the converter. Should be over 13v.
If converter output is ok, then have batteries load tested...