A4 2.8 Dead ECT Sensor (Engine Coolant Temp)

Can someone please tell me where to locate the engine coolant temp sensor in my '97 A4 2.8. I've tried looking but am not sure what I'm looking at. The gauge on the dash stays mostly at 0, but occasionally moves to where it should be. My DTC code scanner says its a coolant temp sender problem. Thanks for any help. -TC p.s. - anyone know where I can get a free engine part diagram?

I figured it out. Bought the sensor at Audi and searched for something it matched. Audi didn't make this an easy one for DIY'er but I managed.