[Chuck v]

Jim,


Curious that the original part was a three terminal device...maybe we are not talking about a battery disconnect relay here. You mentioned that a local guy identified this as the trouble making part initially...maybe it is a case of wrongful identification. There may be a solenoid of this type in the bay to provide the TEMPORARY connection of the house bank with the chassis bank to assist in engine starting when the chassis bank is low...there is a switch on the dash that activates this function (usually marked with a battery icon or similar graphic...or the words battery boost perhaps - I forget the exact marking on that coach.) If you have an assistant, try listening to/feeling the solenoid in question when another person actuates the dash switch -- it should be clear when it pulls in.


If possible, please post a picture of the bay where these relays and electrical devices are located...as I recall it is on the curb side and adjacent to the battery trays. It will help us in our discussions.


Maybe Phil (proost) is still reading this thread and can post a picture of his bay as well for comparison...


Thanks for being patient, long distance trouble shooting by text is not an easy thing...


Chuck