badev02 Posted June 18, 2019 Report Share Posted June 18, 2019 I've come across a strange issue that I'm hoping someone might be able to help with. For some reason, my nitrous solenoid is activating if the toggle switch is ON with key OFF and obviously no conditions being met as the engine is off and 0% TPS . If I turn the key ON and the toggle switch is ON, the solenoid turns off until it meets the conditions specified in the GP output as it should. With Key OFF and toggle switch OFF, things are off. I've attached my wiring and GP output settings. Could this be a weird backfeeding issue? KEY OFF / SWITCH OFF: SOLENOID OFF **KEY OFF/ SWITCH ON: SOLENOID ON ** KEY ON/ SWITCH ON: SOLENOID OFF KEY ON/SWITCH ON/CONDITIONS MET: SOLENOID ON Quote Link to comment Share on other sites More sharing options...
Simon Posted June 18, 2019 Report Share Posted June 18, 2019 Yep that is a back feed. The ECU will provide a ground when not powered up so switch on and ECU of the relay will energize. Quote Link to comment Share on other sites More sharing options...
badev02 Posted June 19, 2019 Author Report Share Posted June 19, 2019 Is this an issue or is it OK to leave it as is? Sounds like it's causing the ECU to stay on while the car is off which could drain the battery. If it's an issue, what would be the correct way to wire up this relay for the nitrous solenoids? Scott Quote Link to comment Share on other sites More sharing options...
Greg W Posted June 19, 2019 Report Share Posted June 19, 2019 Are you sure your switched 12v is actually switched Quote Link to comment Share on other sites More sharing options...
Simon Posted June 19, 2019 Report Share Posted June 19, 2019 As Greg mentions are you sure your 12V is actually switched. As for the solenoid to power up it has to have that 12V there. Quote Link to comment Share on other sites More sharing options...
josey Posted September 2, 2019 Report Share Posted September 2, 2019 this works as you wire it. yes it is back feed. and why dont you just put switch to off position and problem solved? Quote Link to comment Share on other sites More sharing options...
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