Denso O2 Sensor Wiring Diagram. Denso universal oxygen sensor instructions our instructions on how to convert seven to four wire 02 are all shown from the the wiring diagram for this seven wire wideband oxygen sensor are as follows : Check the threads on the exhaust manifold/pipe to make sure they are not damaged.

Check the threads on the exhaust manifold/pipe to make sure they are not damaged. On pg 3 it shows the harness from the o2 sensor goes directly to the x11 diagnostic port the small one on the side of the fenders. White, white, black and gray.