ok so im trying to get my autometer a/f guage in my car.....its all put in and i connected the wires as follows:

Red - Ignition power
Black - ground on the unibody
Purple - o2 sensor

when i turn my key it flashes all the lights real quick, then i start it and it just stays with the most rich light on (only one light, all the way to the right)......i can rev the car and nothing happens.......

ive searched as much as i can but i keep getting vauge answers, and usually for a 4 wire o2, mine is a 1 wire....thanks for the help!