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Potentiometer wiring


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#1 81zfan

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Posted 14 March 2019 - 09:56 AM

Needing a little input here. I Have the SAFC installed and the Rpm's aren't as jumpy as some say but they are not sitting on a specific Rpm.  I know you hook power to one side, rpm signal from the SAFC to the middle and ground the opposite side of the power wire.
Can you tap into the Power wire ,Rpm signal and Ground wire on the Safc harness?





#2 Turbo Cary

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Posted 15 March 2019 - 05:55 AM

You dont hook up power to it you connect RPM signal. What you're trying to do is change the resistance of the RPM signal into the SAFC.

So wire it as such:

RPM In ---> Middle to SAFC ----> last leg to ground.

Then you adjust the dial on the resistor while watching dash RPM and SAFC rpm to ensure they match. I ran a SAFC 2 for a few years and that is the way I did it.

#3 81zfan

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Posted 18 March 2019 - 08:37 AM

I totally read the install of the Potentiometer wrong. After I read your comment it makes a lot more sense to wire it that way.




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