Indicators

Nexus Series Firmware Help › Electrical › IndicatorsUpdated Sep 2026

On a race car or full custom build there's often no factory body module to run the turn signals. A Nexus can do it. Here's how the Indicators function works.

What the Indicators function does

Turn this function on and the Nexus can drive the turn signal (indicator) lights itself. It's aimed at builds where the factory body electronics have been removed, such as race cars, restomods with new wiring, or vehicles controlled by a Nexus VCU.

Output Mode

  • Constant: the output stays on while the signal is active. Use this when something else, like an existing flasher relay, does the flashing.
  • Pulsing: the Nexus flashes the lights itself at a 50% duty cycle. The Flash Period setting, in milliseconds, sets how long each flash cycle takes.

If you're using pulsing mode, remove or bypass any old flasher relay in the circuit. Two things trying to flash the same bulbs gives you an erratic blink.

Hazard Lights

Enable this and you can assign an input, typically a dash switch, that flashes all the indicators together as hazard lights.

Showing it on a dash

The Nexus shares indicator status over CAN with Haltech displays like the iC-7, so the dash can show what the lights are doing without extra wiring.

For the physical connections, see indicator wiring, and for the other lighting outputs, headlight wiring.