The new Nitrous Relay Board from Digital Delay was designed to simplify wiring between the Nitrous system and a Timer.
Whether using a Timer from a Delay box or a stand alone Timer to activate a Stage of Nitrous.
The Nitrous Relay Board is also designed in such a way that if the Fuel Solenoid was to short out and blow the fuse on the Nitrous Relay Board, the Nitrous solenoid would be turned off to protect the motor.