Got a buddy installing one on a '03 Civic. There are four wires coming off his O2 sensor, 2 white, 1 black, and 1 gray. I can't find instructions anywhere.

 

what color wires are on the gauge??

 

just a heads up, unless he has a wideband O2 sensor it's not going to do **** for him. Just a fancy light show.

 

^Yes we both know that.

 

The wires off the gauge are black, red, and purple. Black and red are for power, purple for the signal, but we don't know which wire to hook it up to on the O2 sensor.

 

im pretty sure it is the gray one, even though its not as good as a wideband it still gives a general idea

 

o yeah make sure you use a tap in connetor, dont just splice it in

 

Tap in connector.. is that the kind with two "tubes" and a metal thing in the middle, where you pinch the connector and the metal cuts through the silicone?

 

gauge
red=power
black=ground
purple=to o2 sensor

o2 sensor
2 white=signal
1 black=ground
1 gray=power

might want to have a 2nd opinion on the o2 sensor part

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictildeath &raquo;</TD></TR><TR><TD CLASS="quote">gauge
red=power
black=ground
purple=to o2 sensor

o2 sensor
2 white=signal
1 black=ground
1 gray=power

might want to have a 2nd opinion on the o2 sensor part</TD></TR></TABLE>

purple goes to the white wire in ur ECU plug...the white wire is a lil thicker than the rest

 

He already tried one of the white wires off the sensor but I'm not sure which one, I'll tell him to try the thicker one if he hasn't already.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ECAhatch &raquo;</TD></TR><TR><TD CLASS="quote">purple goes to the white wire in ur ECU plug...the white wire is a lil thicker than the rest </TD></TR></TABLE>
No. I used to have mine hooked up to the ECU wire and the signal looked like ****. I reconnected it near the sensor, and it's a nice crisp 1 bar instead of 3-4 bars bouncing all over the place.

 

yes thats a tap in connector, in my ek its the white wire but they should all be in the same spot since most o2 are the same, its should be like this
no yes
no no
tap into yes its either the black or grey one

 

aaaaaaaaarggghh what wire is it guys!?!?!?

 

whatever the top right wire is when looking straight at the connector

 

now which connector the one that goes to the sensor or the on that goes to the car??

 

heres the best drwing i can make
O2 Sensor ------connector,connector---------ECU
l
l
when looking at this connector
random color tap here

same color same color

thats all i got

 

damn it doesn look right the l
l
l
should be pointing to the second connector