If its a three-wire, two are for heating, and one is for the current from the sensor to the engine computer. Hopefully you hooked those up correctly.

What you should do now is connect your meter to Pin 3 of the diagnostic socket and use the duty cycle reading on your meter to adjust the mixture to 45%. There are literally hundreds of posts on how to do this.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe