OK so I placed the extra resistor across the lines just like the drawing and just like how I tested indoors with the battery. It is still reading 1.27V that makes no sense. So I disconnected the connector on the cars connector that goes to the ECU and with the car running and the O2 sensor completely disconnected I measured the blue and white wires using a DMM and from what I understand the voltage reading is supposed to read directly from the O2 sensor as it heats up from the cats. I was getting a very low reading but then when I plug the connector back on to the car connector then the voltage reading on the DMM shows as 1.27V. so this high voltage only reads when I connect it to the car. So disconnected the connector again and measured the two pins on the ECU plug and no reading. When I connect the connector up again then I get 1.27V again. What could be wrong?