trans brake/2 step ?
Thanks!
It's good to run a relay to keep a lot of current from going through the switch, since a switch maybe used to activate multiple devices, nitrous, 2step, and TB.
Run the red wire on the TB button to IGN+ or constant 12V+ from a toggle switch.
Run the black wire to the 12v+ activation turn on the relay power to the switched output.
On the relay have the switched 12v+ (is only hot when the TB button is down) run that to the wire on the transbrake solenoid and also to the yellow 2 step wire.
The TB solenoid should have 2 wires, but one is grounded.
Most relays have a 12V+ constant, 12V ground, 12V switched (turns on when the TB button is pushed), and the 12V activation wire which activates the relay when you hit the TB button and it sees 12V+.
Some people run the switches using ground, but if the wire ever grounds out it will remain hot and keep whatever is on running.


