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Tack work fine and moters run fine all at the same time the fuel gage blinks the 2 trim senders dont work and speedo doesn not work goes to 5mph max i checked all conections at the motor and at gages seem fine replaced groung terminal at fuel tank also made new conections on fuel sender also when i disconect fuel sender same thing any ideas?
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You can test fuel sender wiring and gauge by conning a jumper between pink wire at fuel tank sender and ground, turn key and fuel gauge should read full, if does wiring and gauge ok fuel sender is bad. Speedo pickup hole in front edge of gearcase may be plugged up or speedo hose kinked or pinched under cable tie somewhere in boat. Trim senders on engine bracket may be stuck, see if can move them up and down by hand.
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