The multistage nitrous relay wiring diagram is for Elite ECU installs with more than one nitrous stage. The Elite can run up to six stages, and each one needs its solenoids switched on and off by the ECU. Nitrous solenoids pull more current than an ECU output should carry directly, so the usual approach is for each stage's output to trigger a relay, and the relay does the heavy lifting.
You need this diagram when you're wiring a system with two or more stages, or converting a switch-activated kit to ECU nitrous control.
What to check:
- Each stage has its own relay and its own output, assigned in the nitrous stages setup.
- With a DPO as the trigger, the DPO goes to one relay coil pin and switched 12V to the other.
- The output's active state matches the wiring. Low grounds the output when the stage is on, which is the default.
- The solenoid feed is fused and sized for the solenoid's current draw.
- Every stage clicks on at the right time in a test before any bottle is opened.
Need this diagram? Ask us and we'll send it over with advice for your build.
