A/F ratio install

[mcvey90]

I need to tie in the AF gauge, and was wondering which of the four wires was the sending wire.

The 02 sensor has four wires.
1 Black
2 White
1 Purple or lavenderish.

I am assuming its the purple wire I need to tie into, or is it the black.

Should I tie it in at the 02 sensor wire or the wires that are on the sensor extenders??

thanks for the help

 

[BlackFox5.0]

Find a computer pinout specific to your year and tap in to the signal wire that goes to the computer.

 

[go4it]

http://hp.autometer.com/techtips/faq_tech_writeups/air_fuel_hookup/air_fuel_hookup.html