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Old 03-06-2010, 06:11   #1
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Control Panel Mystery

Ok, I just got my salvage project Phasor P2-13 (Beta Marine BZ482 clone) engine installed. It came with a control panel featuring a tach, oil pressure, water temp, voltmeter, etc.

So here's the mystery. When I crank the motor, all the gauges come on, but then go back off when the key returns to the accessory position.

My first thought, "oh, I have them on the start terminal, instead of the accessory terminal." Wrong. They're on the accessory terminal, and the starter is definitely on its own start terminal.

So I jumpered a cable from always-on power to the accessory terminal. This makes the gauges come to life BUT ONLY when the key is turned to accessory.

That makes no sense to me because if I jumper from always on to the start terminal, it cranks the starter over no matter what position the key is in. I mean, if I'm making the connection outside of the switch, why would the position of the switch matter at all?

I'm really confused. Am I lacking a ground to my control panel wiring? Why is my accessory switch not getting power if I have the key turned to accessory and the voltmeter grounding to the engine? Why does accessory power work with the switch when I have the terminal directly jumpered to the always-on power?
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Old 03-06-2010, 06:15   #2
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I vote for a high resistance ground
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Old 03-06-2010, 06:21   #3
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Originally Posted by Sailmonkey View Post
I vote for a high resistance ground
Agree. That is what I would check first. Might also disconnect the wires and test the switch as well, just so you are sure.
The water is always bluer on the other side of the ocean.
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control panel, electrical

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