Don't know if this will help but had a similar clicking on our 94 Bounder. Eventually I couldn't get the chassis battery to stay connected. Had to replace the switch/relay that connects/disconnects the battery. Don't recall hearing the clicking after that but sold the motorhome shortly after that. Have you ever had a problem where you turn on the chassis battery but still have no power to dash? Turn it off and on a few times then have power to dash? That's how our problem started. The 2 issues may be unrelated, but thought I'd throw it out there.