Our beautiful 2003 Monterey is new to us. As with anything new, we have a few issues. My wife and I were ready to leave on our next great adventure when the Cummins wouldn't start. When we turned the key to the start position, (in neutral) all the dash lights lit up as normal including the "wait to start" but didn't engage the starter. I check the newer batteries and they were fully charged. I left the key on, crawled under the coach and jumped the starter solenoid with a piece of wire. The solenoid and subsequently the starter engaged properly and it started right up. We continued on with our trip with the inconvenience of hand jumping the starter. Along the way, I installed a start button in the battery bay so I didn't have to keep crawling under it to get it started. I called Bend, Or and talked with a wonderful tech, Jeff Spear, who gave me a lot of valuable info. He suggested I test the start switch to make sure it was working. I but my test light in the "starter" pin connection on the back side of the starter and turned it to the start position and the light came on indicating power to the starter. Jeff said the only other thing he could think of between the start switch and the solenoid is the Allison control box that has several relays and a couple of fuses. Part of the start sequence is to verify that the coach is indeed in neutral to start which is part of the function of the box. I found the box, checked the 2 10amp fuses and pushed on all the relays to make sure they were secure. All looked fine. I suspect it may be a bad relay or a possibly a break in the wire going to the solenoid but think it is unlikely. Has anyone else had this issue or any ideas on what to try next? Thanks for you help. Jim