2012 382 Dash lights

I'm having problems and was hoping someone would have ran into this situation before. My company just purchased a used 2012 382 about 1-2 months ago. We finally were able to bring it into the shop to polish and add some things to it. After sitting in the shop for a week, went to start it and batteries were dead. After looking around, noticed the dash buttons were all lit up with the ignition off and the doors closed, however, the instrument cluster was not lit up. I've looked all over to see if there is a loose wire, bad fuse or even a bad dimmer switch and found nothing. Any help from anyone that has ran into this problem?