2026 Prelude + comma 4 / openpilot (Confirmed Working)

[feldsam1]

Hello everyone,

I can confirm that comma 4 works with the 2026 Honda Prelude.

Support has already been submitted upstream:

PR: https://github.com/commaai/opendbc/pull/3624

Until it is merged and included in the official release, you can install my fork using a custom software URL during comma 4 setup:

• openpilot: feldsam/prelude
• SunnyPilot: feldsam/sp-prelude

For the installation, I used the Honda Bosch B harness.

I actually installed the comma 4 at the same time as the OEM HomeLink mirror, since both require removing the front section of the headliner, making it convenient to do both jobs together.

Happy to answer any questions.

(Photo of the installed comma 4)