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I am trying to design an ELD device that could be connected to the deutsche 9 pin and 6 pin port on heavy-duty vehicles. Is there any place where I can get the pinout configuration of these ports for different brands? I am looking for the pinout configuration of these trucks (Freiglighner, Kenworth, Peterbilt, International, Volvo, Mack, WesternStar).

Thank you

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  • The workshop manuals? have you checked?
    – Solar Mike
    Oct 2, 2019 at 7:55
  • @SolarMike not available in the workshop manuals unfortunately.
    – Adnan
    Oct 2, 2019 at 8:49

1 Answer 1

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Isn't it a standard, so all vehicles are wired the same (for a given connector)?

The following information comes from the Handbook of hardware schemes, cables layouts and connectors pinouts website.


Here is the SAE J1708 9-pin connector.

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H,J are not connected. A and B are twisted in cable. C and D are twisted in cable. F and G are twisted in cable.

SAE J1708, although still widely used, is replaced by SAE J1939 which is a CAN protocol. They both apparently use the same connector, but I don't know how you would establish which system is used.


Here is the SAE J1939 9-pin connector

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This is the connection currently in use, with the same physical 9-pin connectors.


Here is the SAE J1587 6-pin connector.

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The 6-pin Deutsch-connector was standard from 1996 to 2001.

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  • One small comment. its best to verify the molded letter designation on the plastic molded hardshell connector. Sometimes folks draw a diagram from the mating surface, but other times they draw the schematic / diagram from the back view of the connector. I've seen it done both ways... not fun for troubleshooting.
    – zipzit
    Oct 4, 2019 at 6:35

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