I am installing the SPLIT SECOND PSC1, but I have 3 wire getting very confused.

For White/Green wire, it connects to second Air Fuel Ratio sensor, but tC shouldn't have the second one. Should I just ignore it?

FOr Yellow/Black line, it asked to connect to tachometer signre wire. May I know where is it?

FOr the orange one... it need to connect to the relay coil. Can someone tell me where is this wire?



It is very helpful if someone can take a picture for me.
Thanks

 

The secondary O2 sensor is located on the s-pipe, right before the cat.

The tach signal comes off the ECU on connector 4 (E4) pin 5. Im not sure of the color, but just splice into that right after the ECU.


Which relay coil are you talking about?


Make sure you disconnect the (-) battery lead before doing any splicing or cutting