DT125 Posted October 3, 2015 Share Posted October 3, 2015 I just fitted a aem wideband sensor . It says in the leaflet I need a 0.5 volts power supply Can I get this from the o2 sensors pin on the ecu ? Quote Link to comment Share on other sites More sharing options...
Scott Posted October 3, 2015 Share Posted October 3, 2015 Is it not a 5v supply? Quote Link to comment Share on other sites More sharing options...
DT125 Posted October 3, 2015 Author Share Posted October 3, 2015 in the leaflet the red wire is 12 volts and the white wire is 0.5 volts Quote Link to comment Share on other sites More sharing options...
DT125 Posted October 3, 2015 Author Share Posted October 3, 2015 can i hook it up to one of the 02 sensors . or will this affect the air fuel ratio ? Quote Link to comment Share on other sites More sharing options...
Scott Posted October 3, 2015 Share Posted October 3, 2015 No idea, never heard of such a thing. The controller/gauge should take care of all that. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 3, 2015 Share Posted October 3, 2015 The 0.5v is an output so you can send a simulated narrow band signal to the cars ECU Quote Link to comment Share on other sites More sharing options...
DT125 Posted October 3, 2015 Author Share Posted October 3, 2015 The 0.5v is an output so you can send a simulated narrow band signal to the cars ECU so what your saying is I dont need the white wire . I can just wire up red and black and dont need to calibrate the thing ? Quote Link to comment Share on other sites More sharing options...
Scott Posted October 3, 2015 Share Posted October 3, 2015 The 0.5v is an output so you can send a simulated narrow band signal to the cars ECU That makes more sense. Dual channel output sensors are common. As above they can either send the signal to the ECU or to a second gauge. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted October 4, 2015 Share Posted October 4, 2015 so what your saying is I dont need the white wire . I can just wire up red and black and dont need to calibrate the thing ? Yes. If your car is running an O2 sensor you don't need the white wire. My car was set up like that for a while. Quote Link to comment Share on other sites More sharing options...
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