What this page sets
The staging indicator function decides when each lamp should light. This wiring page decides how many lamps there are and which ECU pins drive them. Tick each extra lamp you need beyond the first:
- Second Stage Indicator
- Third Stage Indicator
- Fourth Stage Indicator
Choosing outputs
Each enabled lamp needs its own output. A DPO (digital pulsed output) is the usual choice, and a stepper output also works. These outputs switch to ground, so wire each lamp with 12V on one side and the ECU output on the other. If a lamp draws more current than the output is rated for, such as a large incandescent bulb, drive it through a relay.
Active State
| Setting | Output pin when lamp is on | Output pin when lamp is off |
|---|---|---|
| Low (default) | Grounded | Not grounded |
| High | Not grounded | Grounded |
Leave it on Low for a normal lamp or LED wired to 12V. Only switch to High if the device you're driving expects the opposite logic.
Make sure every lamp lights at the right stage before the car goes to the track. It confirms the pin assignment and that each lamp is wired the right way round, which matters for LEDs.
