[indefactorX]

Alright i know alot of you who are going the turbo or nitrous route are gona install an A/F gauge

On a standard autometer setup there are 3 wires to connect, 4 if it is an illuminated gauge..

first two are red and black wires, one is ground (Black) the other is connected to a switched possitive such as the fuse for the cig lighter(Red). The last wire is going to be a violet colored wire and this is the the wire that you're going to connect to the Signal wire from your o2 sensor

Those of you who don't know, the sensor you want to hook it up to is the sensor that is built right into your exhaust headers, this is the best one to use since it is a heated sensor and has the most accurate reading...

Be sure to hook the Violet wire from your Autometer A/f Gauge to the correct signal wire

simple right? Sorta...

Take a look at your o2 sensor, the wire comes around into a connector, make sure you are hooking the wire up AFTER the connector, the 4 wires should be enclosed in black split conduit.. You'll see a Yellow wire, two white wires, and a gray wire with a black stripe on it (This may or may not hold true with the LC's)

The wire you want to hook up to is going to be the gray with the black stripe on it as this is the correct signal wire..

to make it easy on yourself, go to autozone and get the crimp style wire splicers and crimp the violet wire to the the Gray w/blackstripe Wire after the connector and
Viola!

hope this helps someone, had enough trouble figuring it out on my own

 

[bh206]

I have
Green, Gray, Pink, Orange

I'd imagine I also need to use the Gray wire(with black stripe)

 

[indefactorX]

try and see if it works, then this can be an LC & LC2 write up

 

[DIRTYsouthBB6]

Good bit of information. You are right in saying that you should connect the signal wire to the primary oxygen sensor, but for this reason: on OBD-II ECU-equipped vehicles, the primary oxygen sensor(s) are the ones that are responsible for measuring the air-to-fuel ratio that is relayed to the vehicle's ECU. The secondary oxygen sensor(s) are responsible for detecting the presence of a catalytic converter.

 

[Izapyou]

Where did you hook up your ignition wire to for the a/f gauge?

 

[DIRTYsouthBB6]

Originally posted by Izapyou
[body]
Where did you hook up your ignition wire to for the a/f gauge?
[/body]

I don't think there is an ignition wire on air-to-fuel ratio gauges. There is a main power wire ( usually red in color ) that you run to a switched source such as the ignition. Typically, people just run this power wire to the ignition fuse in the interior fuse box.

 

[bh206]

I was looking after the connector

before it I have: black, gray, 2 white.
after it I have: green, grey, pink, orange

I'll try the grey one when I have the time

 

[bh206]

bump

I need to know what wire to splice for the signal.

I thought it was the grey wire, which I tried.. with no luck... grr

 

[indefactorX]

on yours it should be the black

 

[bh206]

I'll try black when I get the chance!

hopefully I didn't fry my gauge

 

[bh206]

got it working!
thanks, it was the black wire!

 

[atrimble_2001]

Alright im guessing theres s difference depending on which state you bought your car in. Cause i have pink, orange, grey, and green with a black stripe on my 05 Accent GT

 

[atrimble_2001]

Alright i hooked it up to the green wire with the black stripe. It seems to be working but it cycles at idle like to ideal then off then ideal. Its weird but it reads rich when i rev so do i have it wired right or what?

 

[bh206]

that's exactly what it should do.

sweep at idle, sweep at cruise, rich at WOT.

 

[atrimble_2001]

Yippee kiya. Thanks and its the green wire with the black stripe, after the connector.

 

[GregsterGSi]

are we open or closed loop?

 

[GregsterGSi]

Originally posted by bh206
[body]
that's exactly what it should do.

sweep at idle, sweep at cruise, rich at WOT.
[/body]

Closed loop O2 monitoring.. aka ricer light show

The A/F gauge is completely useless,I would have invested in an Oil PSi

 

[indefactorX]

i want to see you run a nitrous system without an A/F meter..... It's almost critical to know if you're leaning out during spray

 

[GregsterGSi]

Originally posted by indefactorX
[body]
i want to see you run a nitrous system without an A/F meter..... It's almost critical to know if you're leaning out during spray
[/body]

Most people who run nitrous use a wideband o2

 

[bh206]

I found the A/F gauge very useful when fixing my fuel trim problems.