Help - I have a 2000 Winn Journey Diesel pusher. After sitting for 1 month, I could not get it to turn over. I first thought the engine battery...but could not get it to turn over with the MOM button (boosting with house batteries) I then put a trickle charge on the engine batt overnight (I put the pos connection on one battery and the neg on the other) The next day I still could not get to turn over...Is there a starter fuse somewhere? Any sugg. greatly appreciated. Thanks