When I program in a route the finish time is always 12 hours off.
For example if the arrival time is 4:00 pm it shows 4:00 am.
Is there an adjustment for the gps timer ?

 

My uneducated guess as someone that DOESNT have boom box, check the bike clock. I bet the bike clock is off 12 hours and the gps is using that as the "starting" time.

 

This would be my guess as well.

 

thanks guys I will try that

 

If you go into the clock settings, there's an option to have the clock use the GPS time. Set that and you should be good to go, as long as your time zone is properly set.