Getting a tach to work with aftermarket ignition?
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Joined: Oct 2004
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From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
Getting a tach to work with aftermarket ignition?
I have an 86 trans am and I'm looking into an MSD, Mallory, or Crane aftermarket ignitions. I'm wondering if anyone has experience with hooking up the stock tach- I really don't want to get an aftermarket one since it'd be a hassle.
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Joined: Feb 2005
Posts: 112
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From: Perth WA, Australia
Car: 1988 Camaro IROC LB9 F
Engine: 305 HO EFI
Transmission: TH700R4
Axle/Gears: GU5 LS 3.23
Most MSD & Crane ignitions should accept the stock tach wiring connection which is taken from the B (marked on the EST module) input of the EST. The Crane Hi6 actually provides a tacho out wire.
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