How to Hook Up Two GPS Units on a Boat
- 1). Unscrew part way two of the screws on the common power bus beneath the boat dashboard. Wrap the pre-stripped red power wire of one of the GPS receivers clockwise around one screw and tighten the screw by turning the screw clockwise with a screwdriver. Wrap the pre-stripped red power wire of the other GPS receiver clockwise around the other screw and tighten that screw as well.
- 2). Unscrew one of the screws on the common ground beneath the dashboard half-way. Wrap the pre-stripped black ground wire of one of the GPS receivers clockwise around the screw and tighten the screw with a screwdriver.
- 3). Loosen a second screw on the common ground beneath the dash and wrap the pre-stripped black ground wire of the remaining GPS receiver clockwise around that screw. Tighten the screw.
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