mikegt4dude Posted October 10, 2017 Report Share Posted October 10, 2017 Hi I'm using my handbrake switch as a launch control input and I'm wanting to connect my dashboard lamp back to the switch, should I add two diodes so the lamp power doesn't upset ECU? Or not necessary? Cheers Quote Link to comment Share on other sites More sharing options...
Simon Posted October 10, 2017 Report Share Posted October 10, 2017 I assume the switch is to ground so when on the ground is provided to the ECU and to the lamp? If this is the case the lamp can act as the pullup and the internal Di pullup can be turned off. mikegt4dude 1 Quote Link to comment Share on other sites More sharing options...
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