ok, the car is a 90 crx si. d16a6 motor. that aside, the dimmer is hooked up, when my lights come on so does the the guage lumiation. but the led that shows you lean ideal or rich will stay on even witht he car turned off, its a 1 wire o2 sensor and it s grounded on the engine block, i just can seem to understand why it will not turn off unless the red power wire is disconnected from the ignition fuse. if thats the right place for the power wire. i couldnt find a write up could someone help me on this