I was wondering if someone can help me on how to install a four wire (Balck, Red, Purple & White) Auto Meter Air/Fuel. I have a 92 civic cx with GS-R Turbo. ECU is chipped Mugen P28. I have my ECU Diagram. Right now, I have three wires hooked up. The white wire I hooked it up on "D14" (Red & White) and the Red & Black is power & ground but when I drove the car for about 1/2 hour the light stayed on "Rich" didn't even moved at all.
And on my second hatch I have a 96 ek with the TYPE-R motor (B18C5) my VTEC doesn't kick in at all. I already checked all the wirings the only thing I haven't done is replace my Oil Pump. Any Help/Advise would be greatly appreciated.
THANKS & GOD BLESS TO ALL!!!

 

are you using the stock o2 semsor lead ?

 

Yes, Also RE: AutoMeter Air/Fuel I think I got it my buddy gave me intructions.
Red Wire: Connect to a fused and switched 12V positive source
that is turned on and off with the ignition switch
Black Wire: Connect to good engine ground.
Violet Wire: Connect to oxygen sensor signal wire. Connect to
vehicle wiring harness, not oxygen sensor since some oxygen
sensors use shielded wire.
White Wire: Connect to 12V Dash Lighting. (Cobalt Series Model
6175 Only.)