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Connecting a tach...

Red63440

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When I bought my car I found a Suntune II tach in a box in the trunk. Not sure if it works or not but need to know what connects to what so I can try it. Yea, I know, its old and outdated but its all I have for now...:violent-smiley-100:

4 wires, red, green, black and blue..I will assume black is ground, red is positive and blue is for the light and green goes the the positive side of the coil...correct???
 
Oooooooh, so close. Green is the trigger and goes to the negative side of the coil. I have the same outdated tach in my car and it works fine :icon_thumright:
 
Aw shucks, so close......thanks!
 
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