We use an older GPS also for a speedometer and compass and mount it up high out of sight for someone walking buy. 12v outlet powers off when cart is turned off so GPS turns off to. Used Garmins are on ebay for $25 but you may want a newer one to cover the new villages areas. Also rigged cable ties as a safety strap in case the GPS suction cup looses grip. GPS works great for garage sales.
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