Welcome to the FMCA Forum.
We need to be sure what chassis/transmission you have, as Safari used several during that time period.
If this is a Diesel Pusher with the Allison 6 speed transmission (MD3060), your symptoms sound like either the IGNITION SWITCH or IGNITION SOLENOID is not functioning.
So, first question-- what is chassis battery voltage?
Do any "only work with the ignition on" items work-- dash HVAC fan, for example?
Brett and Dianne Wolfe
2003 Alpine 38'
Moderator, FMCA Forums
Chairman, FMCA Technical Advisory Committee 2011- Present
Member, FMCA Long-Range and Development Committee 2007-2009 and 2014-2015
Moderator, http://www.dieselrvclub.org/(FMCA chapter)