air/fuel guage install?

[woodyy24]

i bought a air/fuel ratio guage. the way it says to hook it up is tap into the sensor wire from the O2 sensor thats going to the computer.
heres my problem, my car is carburated and i dont have a computer to control voltage to the O2 sensor. anyone know how i should hook it up? i got a free O2 sensor from my buddy that swapped over to a carbed setup on his 88.
ive already got the bungs in the x-pipe and there just plugged at the moment.
also should i try to hook up two of them or just one side?

 

[Black1987Stang]

Cant help you on that but theres 3 wires 2 white ones and a black one, u have to splice into the black one. Youre not suposed to splice into THAT harness but the car harness but u dont have one so i guess u have to.

 

[Michael Yount]

The O2 sensor in the car is a narrow band sensor - it only registers air/fuel ratio within a VERY narrow band around stoichiometric - around 14.4 to 15. Using that signal with a gauge is virtually useless - though people make the error regularly. If you really want to make use of air/fuel ratio data you need a system that's based on the addition of a third WIDE BAND O2 sensor - the kind used at a dyno facility. You can find the right wire to tap - but it's not gonna tell you much.