i have a friend that doesn't know what a wideband 02 is. instead of trying to explain it to him i would like to send him a link on what it is and how its used, etc. is there such a site/page ?
The heater controller is about $20.
The sendor $130.
A 40 LED display about $40. You can use a DVM but the LEDs are much closer to real time. With a meter it's hard to read changing numbers.
That's the heater controller. The operating temp of the sensor is 850d centigrade, so it needs warmed up in a special way, and then the O2 pump can be prodded into action.