strokerzedd Posted April 12, 2009 Share Posted April 12, 2009 I'm looking for help with 2 wires on the RB26 engine electrical harness, my harness has been cut up a little. The first is where the tan wire connected to both the front & rear o2 sensor goes? I know that the shielded brown wire goes to Pin 29, the shielding and Black to ground but I can't follow/read the tan wire on the available wiring schematics posted (I think that it's wire AF97 & Pin #115?, but pin 115 on the ECU plug is empty) and I believe that it's the o2 sensor heater control wire. How does the o2 sensor heater control wire work and where is it connected? I'm using the AEM 1621U ECU & Bosch o2 sensor (only one used with UEGO). Secondly I'm trying to determine where the Black/Yellow Air regulator wire goes. Any ideas? It's really a shame that the pdf wiring schematics posted aren't better quality and easily read, I've printed them & zoomed in to no avail. Any help would be appreciated. This wiring mess is the toughest part of this build! Quote Link to comment Share on other sites More sharing options...
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