Just purchased my new Air/Fuel ratio gauge, i was wondering if anybody had a DIY for installing this on a 2002 B6 1.8TQ, dont know which wire to splice into on the o2 sensor and where to ground and attach to power.... thanks

 

Anyone?... even just help on how to get to the O2 sensor would help out alot...thanks

 

I believe all you have to do is unplug the o2 sensor which is on the exhaust behind the turbo near the cat, and then plug the other wire back in to the provided wires. As for power and ground there’s a power supply block under the dash and the pole at the far left that has a bunch of red wires coming out of it is power that comes on with the ignition then just ground the other wire to a good spot on the car.