get the right oxygen sensor
First unhook the battery. The oxygen sensor is in the exhaust manifold, so do this when the engine is cold. Disconnect the O2 sensor wire at the connector, screw out the old sensor, dab some antiseize on the threads of the new one and screw it in, then connect the wire and hook the battery up.
The black wires are the heater wires, the white wire is the signal wire and the green is the ground wire.
I think its the purple wire coming from the Oxygen sensor!
the purple wire
The downstream O2 sensor was broken and is missing the wiring harness, I have a universal O2 sensor, but need the color codes to wire it properly. It has a purple, pink, black and white.
you hook it up to the white wire that comes out of your O2 sensor
There's no universal color code for oxygen sensor wiring. Buy the right sensor, period. If you're buying a generic sensor for your car (possible, but there are still many different kinds) and need to splice the wires from the new sensor to the car, usually the black wire is the ground and the other wire is "hot." With three-wire sensors, try to find a wiring diagram online to match up the colors. It's risky using a voltmeter or test light to find the hot wire(s), because you could fry your computer.
The oxygen sensor is connected by a wiring harness. The wiring harness contains the signal wire. The signal wire goes to the system computer.
wire for brake sensor just loose where does it hook to
Cut the wire, unscrew the old oxygen sensor then replace it with the new one and finally, connect the new wire, making certain that you follow the manufacturers wiring diagram. To find the oxygen sensor, look at the exhaust manifold, then follow it down to where the manifold feeds into the headpipe. The oxygen sensor is the part that screws into the exhaust and has a wire connected to it.
the oxygen sensor is grounded when you thread it into the exhaust manifold the oxygen sensor should have only 1 wire it should be purple the didnt start putting 2 or 4 wire sensors in until the early 90's there should be a ground from the battery to the block
the oxygen sensor is located in/on the exhaust manifold.it looks like a spark plug with a wire coming out of the top