air/fuel ratio guage

hey guys i got a autometer air/fuel guage, am i want to instal it my self, it has 3 wires , red black and purple, i know the red and black lolz am the purple, which wire is the o2sensor on the computer?

You hook it up right to the o2sensor.

you expecting to be spoon-fed?

just search for an ECU pinout.

E

done!
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