Rep Power: 0

please somebody help me with this one..
i just bought air fuel ration gauge, but i dont know how to install it.
there is three wires. red, black and violet. i know that red is ignition, black is ground, but i dont know where to connect violet. i think the violet connects to oxygen sensor, but where and how..

please somebody help me..

thanks

 
Rep Power: 424

Between the O2 sensor just under the header and the harness... tap the black wire. Just make sure the car has been off for a while... it gets kinda toasty down there.

 
Rep Power: 0

so, i should tap violet wire to the balck wire on 02 sensor under the header. is it the sensor in the header or the one after cat?

thanks

 
Rep Power: 0

hey Boilermaker1, what would you recomend me to get for second and third guage? i mean something that usefull and not hard to install.

 
Rep Power: 424

You're not going to have enough wire to run the violet wire all the way to the header, splice another wire into it. And that's the one you need to tap, not the one near the car. For a 2nd gauge I've got an Oil Pressure guage... the DIY didn't survive the move to the new forum.
Here's a few install pics , I don't have any of the sender end because it's a little hard to get up there. I re-routed the idiot light sender port to a T fitting with stainless braided hose where I mounted the Autometer sender and the idiot light. I mounted them on a custom bracket, but I think I'm going to move them to the firewall when I get a chance.
as far as a 3rd... it's up to you... Some people use voltmeters or water temp.

 
Rep Power: 0

nice install boiler ... i'm gonna need to do that soon, but how do i connect the a/f ratio guage and use it as a kill switch for the nitrous .. like if i'm running lean or rich .. i'm gonna be putting a n20 pressure gauge also .. !!

 
Rep Power: 0

do they make electric oil pressure gauges and not the ones you have to hook up and have oil run though, like one you hook to a wire and tells you the pressure?

 
Rep Power: 413

I have the Autometer Cobalt series Oil Pressure guage. The only way to detect the pressure is by tapping into the line. But my guage is still electric and not mechanical.