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Old Apr 11, 2003 | 10:24 PM
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Todd77F250
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tachometer question
I've found a tach in my junk pile and would like to install it on my truck. The problem is that there is no instuctions, just wires out of it. Are tach wire colours standardized? The coloured wires I have are Green, red, blue, yellow and black ( five wires only ).
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Old Apr 11, 2003 | 11:23 PM
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ecarter50
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tachometer question
All the ones I have seen use 4 wires. What brand is it?

green - ignition

white - dash lights

black - ground

red - power when key is on
 
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Old Apr 11, 2003 | 11:32 PM
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tachometer question
Where on the ignition would I put the green wire?
 
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Old Apr 12, 2003 | 01:17 PM
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ecarter50
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tachometer question
The negative side of the coil.
 
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