I have a 2 pin foot pedal that is an NO switch. When i press the pedal down, the circuit closes. I basically need it the other way round. This will be used to operate a switch on a DC motor speed controller which will shut it off. Basically a foot brake. The way the motor controller is currently setup is the power switch is a potentiometer with a switch. when the potentiometer is in the NO position, the controller is off and visa versa.
I would like to connect the foot pedal instead of the potentiometer as it'll be used in a little car but currently i need to keep my foot on the brake pedal for the controller to stay on!
The way I'm thinking of wiring it is via a relay. 12v battery to pedal pin 1, pedal pin 2 to relay pin 86, relay pin 85 to ground, relay pin 87a to dc controller pin 1 and dc controller pin 2 to ground. does that sound right?
I've tested it with a multimeter and the results seem correct where the circuit is normally closed but once i click on the pedal, the circuit opens. I just want to check before breaking anything.
thanks for any feedback.
EDIT: this is a crude picture of what I'm trying to do. Not sure if i need to use pin 30 though?