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TOPIC: Tachometer question

Tachometer question 8 years 4 months ago #117513

  • 63 Sabre
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Picked up another project with an 85hp '78 Johnson. Have to rewire the entire dashboard. What looks like a factory tach (matches the speedo) there are three wires coming from the back, the normal wires that go to the shifter/start/motor and an extra dark blue wire that was cut off. Was wondering if this is for a light?
Can't seem to find a schematic for this puppy.
Cal
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Re: Tachometer question 8 years 4 months ago #117527

There should be four wires; ignition, ground, sender, and light. Usually the light is a blue wire.

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Re: Tachometer question 8 years 4 months ago #117529

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Correct you are, my mistake, four wires. All the others were connected but I didn't want to put 12v on anything before checking.
Thank you :)

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