This was an easy install. Any Garmin 3, 3plus, or 5 will fit perfectly!I just took the door out and drilled holes in the rear so the 2 wires can be routed. One wire is for the power, the other is for the external antenna. You can get a "bnc" type external antenna at gilsson.com for around 20 bucks. You can have a navigation system in your car for less than 300 bucks! Another great part is the door will shut when not in use.
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