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2010yarisHBbase
04-22-2021, 05:24 PM
Hello again frens, How do I install a 4 wire tach on my car? The only thing I don't know is the green tach wire, no idea where that goes.
Neinris
04-23-2021, 11:06 AM
https://www.yarisworld.com/forums/showthread.php?t=662&highlight=tach

It might be the light for the gauge.