There are many ways that one could mount a GPS unit to a dashboard. The best way to mount a GPS unit to a dashboard would be to purchase a good GPS mount.
Unfortunately, there are so many GPS units that the BEST way is to contact the manufacturer of the GPS unit. The best way is to email them. If you cannot find a solution this way, the best alternative that I have seen is a Universal GPS Dashboard Bean Bag Car Mount from overstock.com. The GPS unit just sits in the bean bag which has a slip resistant base.
You will need a GPS mount or clamp. This will go on the back of your GPS, and can then be mounted onto your windshield using suction cups. You may also be able to place it on your dashboard, but most go on the windshield.
One can purchase a GPS dashboard mount in a local electronics store. Alternatively, one can purchase it on any online stores like Best Buy and Amazon.
You can learn about the best GPS handlebar mount on the following site: http://www.webbikeworld.com/garmin-gps/garmin-gps-handlebar-mount/. They are definitley useful.
There are many places in your car where the Roadmate mount will function. The best place will be between your windshield and your dashboard, to provide a secure and sturdy surface for your GPS.
The garmin friction mount combines a non-slip bottom mat with a weight-filled "bag" that causes the mount to stay put in place on the dashboard. The mount works just as well as suction cup mounts in helping a GPS unit stay in place but offers a more easily accessible way to remove the GPS unit from your car when desired. http://technical-itch.co.uk/2008/04/08/garmin-friction-mount-review/
A bean bag mount is not the preferred way to mount your GPS in your car. Look instead for a more standardized adjustable mount, with several points of articulation.
You follow what the instruction manual tells you, but the proper way is to mount it above the dashboard, where it is easy to see and not too distracting to the driver.
you can mount it only at certain places on windshield in Indiana
Leather does not get ruined very easily. it is easy to clean so the mount should not effect the quality of your dashboard. take it to a special place and get it mounted correctly so it wont ruin the leather.
A Garmin portable friction mount is an accessory that attaches to one's dashboard in the car. It is for use with GPS navigators and available for online purchase.
Most GPS units will be mounted to the bike's handlebars with a specific mounting device. A device that can be used to mount a GPS unit can be seen on Amazon's website at http://www.amazon.com/Garmin-eTrex-Handlebar-Mount-Bracket/dp/B00004VX15