Tach install question

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Feb 1, 2007 | 06:44 PM

myfast70

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From: Phoenix, Az

Tach install question

Is there a shortcut to hooking up a tach/shiftlight? I know where to hook the signal wire up to at the PCM, but was hoping for somethig easier under the dash. Is there something I can splice/solder into? I would like to complete install tonight if anyone has any suggestions.

Feb 1, 2007 | 07:24 PM

Red99TA

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From: Topeka, KS

It's not that hard to splice into the tach wire at the PCM and then route a wire through the firewall to the new tach. That's what I did for my shiftlight.

Feb 1, 2007 | 07:34 PM

myfast70

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From: Phoenix, Az

I know, I was just hoping for something easier. Where's the best place to go thru the firewall?

Feb 1, 2007 | 07:54 PM

ZFan88

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From: Bellevue, NE

Right behind the pcm..

Feb 1, 2007 | 08:07 PM

Red99TA

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From: Topeka, KS

Yeah, there's a rubber grommet at the back of the PCM (just pull it out and it's down at the back). I actually have about 5 different wires running through there now!
Shift light signal
Fused power supply to e-cutout
Fused power supply to passenger window relay (used autotrix's kit)
Control wire to my line lock
Output wire from my wideband O2, etc.