Hey Pierce..I've got starting problems in Oregon...start batteries show 13 volts but only have 8.5 at the big relay under the dash?
David,
Sounds like a loose or corroded connection or bad wire. Check first at battery end.
I have to thank one of the POs of our coach for having a label maker! ^.^d
So..the big cable coming into the dash start battery continuous duty relay drops virtually all voltage when you turn the key on. I assume (there's that bad word) that I have a bad connection on the other end of that big number 4 guage wire.? Where does the wire feed from?
Daviddeann,
It is helpful if you identify your coach model and year - wiring/component location can be quite different in various models.
On my coach ('93 U280) the 4 gauge red wire feeding the ignition solenoid originates at a large round 90 amp circuit breaker located on the main 12 volt circuit breaker board in my center storage bay. It is covered with a white fiberglass cover. When you remove the cover (CAREFULLY - some connections under this cover are always HOT), you will see (among other things) 3 big round circuit breakers. The one on the left (on my coach) supplies power to ignition solenoid. The feed INTO this circuit breaker comes directly off the ENGINE START post on the isolator, so it should read the same voltage as the start battery bank.