For the past 10 years we have had an onboard navigation system in our motorhomes. We use a current version of DeLorme Street Atlas on our laptop which has an old but reliable Garmin 45 GPS receiver attached to a serial port. Garmin supports most GPS receiver.
Since laptop are generally hard to read in the sunlight, we have a 9 inch TV sitting on top of the dash. The resolution is not as good as a monitor, but it is usable.
I wouldn't leave home without it.
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2003 Dolphin 5342, W-22 Chassis, 22.5" Tires w/a spare, Monroe Shocks. Ultrapower ECM Upgrade.
2004 Toyota RAV4 toad, 2wd, 5 speed. US Gear toad brake.
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