Home-made OBD cables -- update - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-19-2007, 11:44 AM   #1
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Default Home-made OBD cables -- update

I'm planning to put together some OBD cables for myself. Like the Actron CP9115-type cable (even though I don't have the Actron CP9110 code-reader yet) for the wierd Bonnie '94 to '95 OBD system. Also, later, OBD cabling to bring into my computer serial port.

I'm going to order some 16 pin male and female (J1962) sockets. I'm wondering if other forum members have any interest in such cables? My idea would be to make up almost any type of OBD cable for about $15 or less. Members could have them at my cost plus postage (maybe a dollar upcharge towards site expenses per willwren'* idea). Or members get them as kit with parts and piinouts and put them together themselves. Naturally I would be in touch with the appropriate gurus and admins such as Bill Buttermore, jr's3800, Wilwren, and Archon, etc.

Cables can cost almost as much as code readers, and they oftentimes don't come with the used code-readers or else they're the wrong ones. I thought this might be fun and worthwhile to do for the forum.

Let me know of any interest or ideas(no obligation, of course)

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Old 03-20-2007, 12:22 PM   #2
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To The Top for ya. I have a 95 and no scan tool so I'm keeping an eye on this thread.


Good luck.
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Old 03-20-2007, 12:49 PM   #3
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would these work on 97+? if so i would get one from ya!
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Old 03-20-2007, 01:45 PM   #4
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Hi, Ontario members -- I was kind of thinking of Canada (as well as some parts of the U.*.) where it'* difficult to just pop in to parts stores and get free scans.

With regard to '96 plus vehicles (OBDII) what I plan to do at this point is to buy a handful of raw connectors that could be used to make up cables for any Bonnevilles (or compatibles) from '94 on, since they all start with the 16-pin J1962 socket (but of course the OBD protocol is different for the '94 and '95). So yes, I could make up missing or desirable cabling (but not a code reader) for say your '97+ cars. There'* lot'* of forum members to get the details and advice from -- which I would do. But if you want the complete code-reader, your lowest cost bet would be to get one from Harbor Freight (I think Bill Buttermore referenced it in a post a year or so ago) or from ebay.

In addition, as I mentioned, I'm planning to wire directly into an old computer and set up a diagnostic scanner (which is different than just a code reader -- you get codes, but you get lots of other data (voltages,etc)), that are handy when just the codes aren't enough.
In principle, this should work on all Bonnevilles (or GM compatibles) from '94 on, depending on software..

So.... I will make a cable, acquire some software and plug it all in to the serial port of my old computer. I should be able to scan both my '94 and '98. Again, Bonneville Club members have experience with this, and they will post-searched and pestered .

I will post successful (I hope) results. Thanks for your interest, guys (and/or gals)!
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Old 03-22-2007, 01:32 AM   #5
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Excellent Idea! I would get one if i didnt already have one.

This is an old picture, my carputer is much more finished looking now but you get teh picture.

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Old 03-22-2007, 05:39 AM   #6
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Will they come in different colours and have silicone jackets?
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Old 03-22-2007, 06:55 AM   #7
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Quote:
Originally Posted by MACDRIVE
Will they come in different colours and have silicone jackets?
So you can't sleep either?
I will do the very best I can. :briding:
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Old 03-22-2007, 06:58 AM   #8
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Quote:
Originally Posted by bmsgaffer86
This is an old picture, my carputer is much more finished looking now but you get the picture.
Very Cool!!
How did you set that up?
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Old 03-22-2007, 02:41 PM   #9
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Quote:
Originally Posted by Slug
Quote:
Originally Posted by bmsgaffer86
This is an old picture, my carputer is much more finished looking now but you get the picture.
Very Cool!!
How did you set that up?
I have a computer running in my trunk that handles my music and navagation needs hooked to a touchscreen on my dashboard. I found an old software that is not being made anymore (i dont remember the name of it at the moment, my car computer is under reconstruction) that ran about $200. (New it was about $400)

Then i made the cable you were talking about with a max232 level converter to plug my car into the serial port on my comptuer. Because any OBD 1 or OBD1.5 compliant car outputs straight serial data, while any OBD2 compliant car outputs a strangely pulsed signal that needs a fancy programmed chip to convert it to serial.
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Old 03-22-2007, 02:55 PM   #10
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got any pics of your set up? if you would not mind makeing a new post and showing them i would be thankful. In the future thats some thing i would like to do. Just put maybe a 7inch touch screen in the front and have it do every thing
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