4AGE aftermarket Tacho

[Puffy]

Hi Guys,
Kinda stumped on something that seems pretty straight forward.
Trying to hook up an aftermarket tacho (Cheepo SAAS) on a 4age.
I hooked up power and ground and the gauge lit up and thought it was just a matter of tapping into the negative side of the coil for RPM signal (black wire) but does not work.

I grounded a test light and connected to the negative and it did appear to pulse when cranking. Is it safe to assume the gauge is faulty and should exchange it.



Thanks - Puffy

[knightrous]

You need to tap into the IGF wire on the Igniter.

[Puffy]

Yep I did that first and nothing happened.
It is a conversion so I went directly to the negative coil just in case... should it work directly off the negative or is this coil different?

Thanks

[ae93gze]

you could also hook it up to the terminal in the diagnostic plug using a terminal saving you from cutting into harnesses. pretty sure there all the same its the terminal outside the box with a little rubber boot on it on its own.

[Puffy]

Thanks mate... I did notice the iGf from the ignitor splits and goes to the diagnostic plug.
Based on what everyone has said, I got the tacho exchanged and will try again tomorrow.

Cheers - Puffy

[Puffy]

The new tach was faulty guys... after swapping it over at Superfail the replacement worked without issue.