I recently purchased a 1993 Fleetwood Coronado, 32'. I drove it to So. Calif. from Tucson, Az. with no problem. Yesterday I made about a 100 mile round trip and pulled into my property. After shutting the engine off, I discovered that I needed to pull it up further on the property. When I hit the starter, nothing happened. I have re-charged the engine battery to no avail. I also replaced it with another fully charged battery. I am presently hooked up to shore power and everything in the coach works. When I turned the battery disconnect switches on and off, I can hear the solenoid click with the coach battery switch, but the chassis switch causes a solenoid to just hum constantly as long as you hold the switch on or off. When the ignition switch is turned on now the speedometer starts to register and climbs to full speed. My son crawled under the coach to check wiring connections and stated that everything was loose. The main cable and 3 little 12v wires. The post that had two of them on it was loose even and he tightened that. The starter does not engage at all now and it was working just fine on the way home as I had made several stops at mkt etc. and it restarted just fine. I am really confused by the five solenoids in box under the hood up front. Even when I hit the coach battery boost button when trying to start, nothing happens. Could this be a bad starter or solenoid that suddenly crashed and how do I test it?? AThanks in advance for any help anyone can come up with for an old 79 yr old would be mechanic.