PhoSho Posted October 29, 2023 Report Share Posted October 29, 2023 Howdy Team Link, As the title says I have a WRX104X that I am installing a CAN Lambda module onto. I have the CAN connector at the ECU w/ flying leads for power/ground. I am also running the CAN extension cable. My question is: Does the power/ground flying leads at the ECU connector supply power to the Lambda controller sufficiently for the O2 heater to function (I read this is 8 amps in the manual) or do I need to run external power to the controller that is separate from these leads? I have an ignition-switched (relayed and fused) power supply on the ECU-side leads, but those wires appear to be relatively small and I am not sure if they can support the specified 8 amps or not. Ideally, I would like to use the power at the ECU connector (and through the extension cable) to supply the controller/heater to keep my wiring tidy, but I am just not sure if that is viable or not. I am also not sure what AWG is used in the extension cable since it is fully sealed. I appreciate any and all help. Thanks! Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 30, 2023 Report Share Posted October 30, 2023 Yes, just 12V and gnd to the red/black flying leads on the CAN JST is all you need. They are 0.5mm2 FLRY so good for about 6A, the CAN lambda will only pull about 1-1.5A under most conditions. Quote Link to comment Share on other sites More sharing options...
PhoSho Posted October 30, 2023 Author Report Share Posted October 30, 2023 7 minutes ago, Adamw said: Yes, just 12V and gnd to the red/black flying leads on the CAN JST is all you need. They are 0.5mm2 FLRY so good for about 6A, the CAN lambda will only pull about 1-1.5A under most conditions. That is exactly what I wanted to hear . Your expertise is always appreciated! Quote Link to comment Share on other sites More sharing options...
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