Comma AI self driver assistant

[Mike G]

Even with that connection you still have to 3D print. Ordering all new connections would allow a clean extended harness with no solder joints.

On the harness resistors...I watched the video and have seen mention of the resistors before. I assume they're there to prevent the reflections on CAN-FD...can you be more specific as to what size resistors they are and how they are connecting? Or if this is already described somewhere can you point me to that?

Thanks,

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[Ajzride]

On the harness resistors...I watched the video and have seen mention of the resistors before. I assume they're there to prevent the reflections on CAN-FD...can you be more specific as to what size resistors they are and how they are connecting? Or if this is already described somewhere can you point me to that?

Thanks,

I linked them in the video description. 62ohm resistors. You can solder them in permanently or use the bread board connectors to create a socket they plug into.

 

[Mike G]

I linked them in the video description. 62ohm resistors. You can solder them in permanently or use the bread board connectors to create a socket they plug into.

What if we didn't have to cut the Q4 harness at all? Is it possible to create just an extension to the Molex and use a 24 conductor 24GA cable to get from the Q4 up to the mirror area? So a Molex receptacle to a Molex plug that would go into the Comma junction box that connects to the C3X.

 

[Ajzride]

What if we didn't have to cut the Q4 harness at all? Is it possible to create just an extension to the Molex and use a 24 conductor 24GA cable to get from the Q4 up to the mirror area? So a Molex receptacle to a Molex plug that would go into the Comma junction box that connects to the C3X.

that’s actually a great idea. I’ll see if I can locate a female socket.

 

[FLSpartan04]

What if we didn't have to cut the Q4 harness at all? Is it possible to create just an extension to the Molex and use a 24 conductor 24GA cable to get from the Q4 up to the mirror area? So a Molex receptacle to a Molex plug that would go into the Comma junction box that connects to the C3X.

I like this idea, as well! Would the resistors still be necessary?

 

[Ajzride]

I like this idea, as well! Would the resistors still be necessary?

Probably.

 

[Ajzride]

What if we didn't have to cut the Q4 harness at all? Is it possible to create just an extension to the Molex and use a 24 conductor 24GA cable to get from the Q4 up to the mirror area? So a Molex receptacle to a Molex plug that would go into the Comma junction box that connects to the C3X.

Here is the female socket, minimum order is 1,960. It's the same problem I had with the Ford connector. You can buy the plug but the socket has a minimum order that is prohibitively expensive.

https://www.mouser.com/ProductDetail/Molex/501645-2626?qs=OlC7AqGiEDnvWEDYx3YPeg==


Edit:

Looks like this variant is available:

https://www.mouser.com/ProductDetail/Molex/503091-2621?qs=OlC7AqGiEDkAIGQFvezNCg==

It's a PCB connector, so I'll have to design a 3D printed housing around it. I've ordered 10 to play with.

 

[RyZac]

Ordering Q4 harness tonight.

is either Drayday55 or Ajzride accepting ques to modify?
More than willing to pay someone if so or I'd have to watch Ajzride's video a few more times to get all the wire connections straightened out in my head.

 

[Drayday55]

Ordering Q4 harness tonight.

is either Drayday55 or Ajzride accepting ques to modify?
More than willing to pay someone if so or I'd have to watch Ajzride's video a few more times to get all the wire connections straightened out in my head.

Hit up Aj. If he is unable let me know.

 

[Ajzride]

I was able to successfully make an extension harness that didn't require cutting the Comma harness. I'm going to try to get time to make a how-to video with shopping list this weekend.

 

[RyZac]

I was able to successfully make an extension harness that didn't require cutting the Comma harness. I'm going to try to get time to make a how-to video with shopping list this weekend.

Thanks for all your work, much appreciated

 

[Ajzride]

Here's the info on an extension harness instead of modifying the Comma harness:

Shopping list:

(2) White Male Plugs:
https://www.mouser.com/ProductDetail/Molex/501646-2600?qs=AcmJtBVhzkR3B7PmD3EBJQ==&countryCode=US&currencyCode=USD

(1) Black Female Receptacle
https://www.mouser.com/ProductDetail/Molex/503091-2621?qs=OlC7AqGiEDkAIGQFvezNCg==&countryCode=US&currencyCode=USD

(32) Pins
https://www.mouser.com/ProductDetail/Molex/501647-1100?qs=MeCAwI9ZxERfLG%2BPYEOBVw==&countryCode=US&currencyCode=USD

Coupler Enclosure
https://www.thingiverse.com/thing:6600129

Crimpers:
https://www.amazon.com/gp/product/B078WPT5M1/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

Resistors:
https://www.amazon.com/gp/product/B07QDXTH1V/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Heat Shrink:
https://www.amazon.com/Wirefy-180-Heat-Shrink-Tubing/dp/B084GDLSCK/ref=sr_1_1_sspa?crid=1K7UD8AJFZOS&dib=eyJ2IjoiMSJ9.uKZEOjO5jb_qXjEFmeryEb4he7IchWPuE1HsgQalSHEelAte1iul13W4yHKk7XLzt4dZvi6jumAPyIT0HCi2x7kaeavJtidyFOMtHpTRPfCFb3R_CfRR80bVa3EgA7LFuVcQzy0cu7EUGng3FVq_rNoy9Fk1Kz-eKI784vik0_v_6bps5GdOd-7v2PrcbJ-XR9sKPqigXyBo1PBZEJmfbn2nW0v4HIiWISRQC-f16Mw.kW-NOe02_ilyb96_NHuXW12sPopxYDVSIKBY-xoYjxs&dib_tag=se&keywords=1mm+heat+shrink+tubing&qid=1714362061&sprefix=1mm+heat+shrink+tubing,aps,107&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1

DIY VIdeo:



UPDATED PART NUMBERS FOR NEW STYLE HARNESS:

The white part is now:

https://www.mouser.com/ProductDetail/Molex/501646-1800?qs=0XEC3CxQBhA%2BL0eCX3iFZA==

Pins:

https://www.mouser.com/ProductDetail/Molex/501647-1100?qs=MeCAwI9ZxERfLG%2BPYEOBVw==


Receptical:

https://www.mouser.com/ProductDetail/Molex/501645-1820?qs=AcmJtBVhzkSC09DvP4X49A==

 

[ebf]

I’m trying to build the latest @Ajzride harness but the connectors are back ordered on Mouser.

Would anyone be able to craft one for me? I’m happy to compensate for your time.

 

[Ajzride]

I’m trying to build the latest @Ajzride harness but the connectors are back ordered on Mouser.

Would anyone be able to craft one for me? I’m happy to compensate for your time.

https://www.digikey.com/en/products/detail/molex/5016462600/1787767

 

[Ajzride]

Okay guys, the team is making public a lot of the enhancements we have been working on for Fords. We have developed a fork of SunnyPilot with the goal of allowing early adopters to help test and refine features before they are submitted to the SunnyPilot team for inclusion. I will try to keep this thread here focused on hardware and installation, while the new thread can focus on software and features.

https://www.f150gen14.com/forum/thr...t-a-ford-specific-fork-for-the-comma3x.24241/

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