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FFCobra Master Craftsman
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Discussion Starter · #1 ·
Hi guys I am trying to install my tach adapter and I have the instructions from autometer however the wires o the tach adapter supplied by FFR do not match. Can anyone tell me what is what as there are no instructions in my bag. Wires are Red, Black, White and Green
 

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Here are my notes from when I installed my Autometer tach. It worked!

From the Autometer site: Auto Meter

Tachometer Signal Wire Installation
for 4.6L engine(s)
Must use model number 9117 Auto Meter tachometer adapter. Locate the large, square 42 pin wire harness connector in the corner of the engine bay where the passenger fender meets the firewall. Pop the plastic cover off of the top of this conector to expose where the wires enter the connector and to expose the wire pin numbers. Locate pin number 34 which will be in the corner of this connector and will be either a red wire or a red with a green stripe wire. Cut this wire in half so that you now have two cut halves. Hook the red of the adapter to the cut half coming from the connector. hook the red/green of the adapter to the other cut half. Ground the black wire of the adapter. The gray wire of the adapter will now provide you with a good tachometer signal.

The large square thingy they mention is actually the CCRM – Constant Control Relay Module.
Hpoefully this helps.
Pete
 

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FFCobra Master Craftsman
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4,199 Posts
Discussion Starter · #3 ·
Thanks Pete. It turns out they shipped me a speedhut tach adapter that has been discontinued for three years not the autometer one.....anyway someone at factory five was able to dig up the instructions. For those playing at home Red - Power, Black - Ground, White - Crank Trigger, Green - Tach. I'm going to wire it up today and will let everyone know the results
 
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