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locating suitable "tach" wire

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Old Oct 15, 2014 | 01:02 PM
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From: Scottsdale/coyote drophouse
Default locating suitable "tach" wire

hey folks.. i have Defi gauge ( vsd basis) that displays a tachometer function.. i need to locate a "tach wire" for the car.. and im hoping theres options for inside the cabin vs wiring to the engine bay.. either way.. curious if anyone has any insight on what i can safely hit to get that signal to the gauge.

I know the system uses CAN BUS but im curious if an injector wire would suffice.. i believe my defi unit can do the multiplication and be adjusted.

Last edited by bmccann101; Oct 15, 2014 at 01:10 PM.
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Old Oct 15, 2014 | 01:22 PM
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From: Greenville, SC
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Injector wire is very common on the 350z for gauges. I used it on my window switch for N20.

Down by the ecu connector...all 6 outputs are there. Reference the factory manual to get which pins.
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Old Dec 26, 2014 | 10:52 AM
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Exactly wich wire did you cut to get a signal? i have problem with finding the right signal.
The pin 62 didnt work for me.
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Old Dec 28, 2014 | 07:54 PM
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I had to tap straight from the coil pack. I think it was the center pin, but don't quote me on that.
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Old Dec 29, 2014 | 03:21 PM
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From: Scottsdale/coyote drophouse
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Yeah I know that on most cars that my shop in Alaska did auto starts on back in the day..we'd always hit a tach single off a coil pack somewhere. .then just adjust the "# cylinders" setting on the item.to get it reading in the right ranges.. most likely what I will do as well...makes it tricky as im wire tucked..was hoping to hit something inside the cabin..oh well
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