Hondata

I bought a Bosch 17025 which is the sensor from the AEM wideband kit, and I can't figure out the what wire is which. Seems like it should be simple but the instructions for wiring the sensor directly to the S300 ECU are in layman's terms like "positive wire," "negative wire," and "signal wire" while the only wiring diagrams I can find for the Bosch 17025 sensor is written with symbols that I dont understand. I just need to figure out which is positive, negative, and signal wire. I have 5 wires, yellow, red, black, white, and gray to choose from. Can anybody help me?

Thanks!

Do you have a wideband controller or are you trying to wire the sensor directly without a controller?

I'm in a similar situation, trying to install without a controller. Is a controller required?

@Spunkster

You must have a controller.

Spunkster wrote: Fri Feb 27, 2026 3:35 pm You must have a controller.

Thank you.