ZTEEEE Posted April 27, 2022 Report Share Posted April 27, 2022 I am wiring up my afr sensor to the expansion loom and I just wondering what I hook up the signal wire to and ground coming off the afr harness to the expansion loom harness Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 27, 2022 Report Share Posted April 27, 2022 If your wideband controller has a seperate analog ground and power ground, then connect the analog ground to the ECU sensor ground on the expansion. The power ground would just go to a good chassis or engine ground. If your wideband controller only has a single ground wire then you dont want to connect it to ecu sensor ground - the best option will be to connect to the engine block which is usually the main ECU ground point. Quote Link to comment Share on other sites More sharing options...
ZTEEEE Posted April 27, 2022 Author Report Share Posted April 27, 2022 so I hook up the signal wire from the sensor to either volt4 or volt5? And the +5v would supply something with power? Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 27, 2022 Report Share Posted April 27, 2022 Many sensors such as fuel pressure, TPS, MAP need a 5V supply, you wont use that wire if you are only connecting a wideband. ZTEEEE 1 Quote Link to comment Share on other sites More sharing options...
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