SAE J1939 9-Pin 2-in-1 to OBD2 16-Pin Adapter Cable
$18.00 / pc · MOQ 500 pcs
Two-in-one J1939 adapter that puts both a 9-pin female and a 9-pin male socket on one 16-pin OBD2 plug, so a single cable covers the trucks in your fleet.
- Description
This two-in-one adapter connects a truck’s SAE J1939 9-pin diagnostic socket to a standard 16-pin OBD2 plug, carrying both a female and a male 9-pin head so one cable fits round and Deutsch-style J1939 ports. It is what lets a telematics unit, GPS tracker or scan tool read CAN1 (J1939) data from a vehicle that was never built with an OBD2 socket.
Only the pins your device needs are wired, so compare the pin assignment in the table with your scanner’s requirement before ordering — a function that depends on an unconnected pin will not work. The standard pinout is kept in stock and custom assignments are built to order.
Key features
- 2-in-1 9-pin head: female and male J1939 socket on one cable
- 16-pin OBD2 male plug on the other end
- CAN1 / J1939 high, low and shield on dedicated pins
- 12 V or 24 V power taken straight from the vehicle
- Flame-retardant moulded shells with anti-interference shielding
Specifications
| Vehicle side | SAE J1939 9-pin, female and male 2-in-1 head |
| Tool side | OBD2 16-pin male |
| Pin A | Ground |
| Pin B | Power, 12 V or 24 V (vehicle dependent) |
| Pin C / D | CAN1 / J1939 high and low |
| Pin E | CAN1 / J1939 shield |
| Pin F / G | J1708 / J1587 high and low |
| Operating temperature | -30 to 80 °C |
| Housing | Flame-retardant moulded plastic |
Typical applications
- Fleet GPS and telematics trackers on trucks and trailers
- ISOBUS control units and industrial engine displays
Custom and OEM options
Length, wire gauge, pin assignment and connector branding are all open to order. Stock builds start from 100 pcs per model and custom wiring from 500 pcs, with free samples for evaluation and mass production in 20–25 working days.
FAQ
Why do some functions not respond once it is plugged in?
Not all sixteen pins are populated — only the lines used for J1939 and J1708 signalling are wired. Check that your device uses one of them.
Can it be used on a 24 V truck?
Yes. Pin B takes the vehicle supply directly, so the same cable suits 12 V and 24 V systems provided your device accepts that voltage.
Related OBD2 Products
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Samples, packing options, payment terms and warranty conditions are set out in How to Order and Delivery Information.
