You’re here. You probably have an 11th Gen Honda Civic and you want to run OpenPilot. Hopefully, shortly after I post this comma will make a Car Harness for this model and you’ll just buy that. Until then, hopefully I can help.

The first thing to do is open the trim at the camera and have a look at the existing connector. Here is what mine looks like.

Check out https://techinfo.honda.com/ for what the pin-outs align to. (Look at the wire color, not the terminal number.)

Look at your connector, the standard comma ai Bosch Harness, and the harness adapter. This is the jumping off point. Obviously the pin-outs are different, if for no other reason than 2022 Honda Sensing dropped the radar.

Your first question after reviewing your connector pin-out and the comma harness pin-out should be around the adapter board.

I used a continuity checker on the adapter I received and here is the pin-out. You might benefit from double checking the one you receive. Make modifications to my notes as required.

Now you should have all the information you need. If all of your hardware matches mine then my schematic should work.

Now how I did it. I ordered the Car Harness for Civic 2020 (Bosch). I thought I could easily remove the pins from the MX34 connector and arrange them as needed. This was not the case. It was hard. I bought this extraction tool set. Here is a diagram that may aide you.

I was finally able to get most of the pins out. Leave the brown, it doesn’t move. The other cable that I wasn’t able to move (yellow) was in a place that was going to have a cable in the end. For this instance, I swapped it on the harness side with the correct cable. I labeled both sides of each cable with tape so I could identify them later.

If you get stuck there is another option. You can cut off the Bosh connector and ordered a new connector and terminals. (I think you could order a “Development vehicle” harness but I’m not sure what you get. Let me know if you go this route.)

Mouser Part	Part	Mfgr	Description	Qty	USD ea.
656-MX34M12PF1	MX34M12PF1	JAE Electronics	Automotive Connectors	1	$1.35
656-M34S75C4F1	M34S75C4F1	JAE Electronics	Automotive Connectors Socket Contact For MX34 Housing	12	$0.047
538-501646-1200	5016461200	Molex	CONN RECEPT 12POS 2MM	1	$0.56
538-501648-1000-LP	501648-1000	Molex	Headers & Wire Housings IGRID FEM TERM Loose PC	12	$0.081

You shouldn’t need the Molex connector or terminals. However, if you’re already paying for shipping so spend the $1.53 for a little insurance.

On the Molex connector, gently lift the tabs and remove the pins. Then, reattach according to the 2022 schematic.

On the MX34 connector, lift the retainer, remove each cable (except brown or any other you determine remains). Insert into the MX34 connector according to the 2022 schematic, lower the retainer.

That’s it! You are now set up to install your Comma.