Tach wiring issue

[Streetwise guy]

I doubt the ECU is actually the final stage of the signal for the coils. The amperage required to run a coil is way higher than an ECU is designed to handle. It will drive an amplifier, possibly mounted in the coils. I shall research and get back to you.

[bonespec]

From Autometer's website

Tachometer Signal Wire Installation
for 3.0L engine(s)
Pin #7, yellow wire with a red stripe at the ECM, or same color wire a the tachometer test connector on the EFI harness, in the left side of the engine compartment. 3-pulse

pass a cold on please.....

[Tristan Smith]

Thanks Bonespec,

But I have been trying to hook up the tach to that wire. Either I am not getting enough of a signal (or the wrong type of signal) off of that, or as I read somewhere, some of the Nissans use a low voltage signal that may be too low to trigger the tach. It's strange though I haven't been able to find anyone who's actually put in an aftermarket tach in a zx that has written, one way or another, anything about the process on the web.

Information super highway my ass! ha