Post by
Carl H »
https://forums.nicoclub.com/carl-h-u9196.html
Mon Aug 27, 2007 9:53 am
or dont make it complex and go buy an o2 sensor for an 1984 200sx turbo...generaly speaking on nissan 3 wire sensors the middle wire is signal, if in doubt take a multimeter and find out which 2 have continuity, thats the heater circut.