Hi Jimcounts,
Welcome to iRV2. If you are unable to find another 07 owner, consider:
1. Google "audiovox GPS" some of the links have pictures. Maybe you could match a picture to your unit.
2. Get your coach number and go to
logon= choose "COACH SPECIFIC CATALOG" and follow the instructions. If the GPS was factory installed it should be listed with all the other parts for your coach.
3. On Monday, call Newmar Tech support at 800-731-8300. Have your coach number. They will be able to tell you what the Audiovox numbers are.