88 lebaron

Hello everyone: I recently bought an 88 lebaron for my teenagers to drive. It is a very nice, well cared for car. It is the premium turbo coupe with the 2.2.
Very nice interior etc. All the electronics work except for the navigation system. It is frozen up and will only display date/time. This cannot be set.
Only way to reset is to disconnect the battery, which starts the clock at 12:00am on Monday, Jan 1.
Does anyone have any info on this Nav. system that came with this model.
I would like to get it working just for the coolness factor for the kids.
Thanks.

take it to auto zone or advanced they can help you..as the only way i know to reset is taking neg. side off..good luck...

scrapper...