O2 Sensor Wire Color Code. Both whites on the o2 connect to the 2 blacks on the oem plug. Of course, although there are other helpful and detailed reviews available in the current market, we believe that this color codes for 5 wire oxygen sensors review can meet your demand and fulfill a few questions you are.
3 connect the black, or ground, lead to the corresponding connector on the factory wiring harness. Probably the first time i've used the ramps in over 30 years. Black on the o2 connects to the blue wire on the oem plug.