K-AN8K-BOXK-TCREBEL CTREBEL LTREXGEN 1REXGEN 2Pinout

OBD and power adapter cables: INF4102, INF4103 and INF4206

Updated

Connect a logger to the vehicle OBD port or to an auxiliary power source with INF4102, INF4103 or INF4206. Then check that the vehicle supply suits the logger or module on the other end.

Which cable to use

OBD and power adapter cables
Part From To Use with
INF4102 OBD type B plug, 180 degree 25-way D-Sub socket REBEL LT and REBEL CT, straight onto the logger
INF4103 OBD type B plug, 180 degree 9-way D-Sub socket The CAN0/PWR lead of a REBEL breakout cable, REXGEN 1 and REXGEN 2, and Kvaser interfaces
INF4206 Auxiliary power plug or banana plugs 9-way D-Sub socket with power, 9-way D-Sub plug for CAN A logger or K-Series module powered without the OBD port

A type B OBD plug also fits a type A socket.

The vehicle OBD connector

Both OBD cables plug into the vehicle's 16-way diagnostic socket (SAE J1962). The drawing shows the socket in the vehicle. The cable plug is its mirror image.

Vehicle diagnostic socket, OBD-II (SAE J1962) OBD-II J1962 · FEMALE Vehicle diagnostic socket, OBD-II (SAE J1962) Front view looking into the vehicle's socket; only the pins Influx Technology cables use are named. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3CAN1-H (INF4102) 4Power GND 7K-Line 6CAN-H 5Signal GND 11CAN1-L (INF4102) 16Battery + 14CAN-L Power Ground CAN bus pins (ISO 15765-4) Linked pins are a differential pair

Pin 16 carries the vehicle's permanent battery supply, so a logger connected to the OBD port stays powered when the ignition is off. Some vehicles use pins 3 and 11 for a second CAN bus. INF4102 connects them to CAN 1.

INF4102 OBD to REBEL cable

INF4102 cable: an OBD type B plug on a coiled black cable ending in a metal-hooded 25-way D-Sub socket
INF4102 connects a REBEL logger straight to the vehicle OBD port.

This 1.7 m cable connects REBEL LT and REBEL CT directly to the vehicle diagnostic CAN bus and the permanent battery supply. Use it with REBEL loggers only.

INF4102 wiring, OBD plug to 25-way socket
OBD pin Signal 25-way pin
3 CAN-H, CAN 1 (medium-speed bus) 19
4 Power ground 22
5 Signal ground 21
6 CAN-H, CAN 0 (high-speed bus) 20
7 K-Line (ISO 9141) 8
11 CAN-L, CAN 1 (medium-speed bus) 6
14 CAN-L, CAN 0 (high-speed bus) 7
16 Battery supply, passed through 9

The other pins are not connected. REBEL CT does not use pin 8, so the K-Line works with REBEL LT only.

INF4102 specifications
Item Value
Length 1700 mm
Wire 22 AWG
Connector A 25-way D-Sub socket with screws
Connector B OBD-II 16-way plug, 180 degree
Operating temperature -20 to +80 °C
Weight 247 g

INF4103 OBD to 9-way cable

INF4103 cable: an OBD type B plug on a coiled black cable ending in a 9-way D-Sub socket
INF4103 ends in a 9-way D-Sub wired to CiA 303-1.

This 1.7 m cable connects a 9-way CAN device to the vehicle diagnostic CAN bus and the permanent battery supply. Use it with:

  • A REBEL logger. Plug it into the CAN0/PWR lead of the INF4203 two CAN breakout cable or the INF4204.1 multi-connect cable. The logger's CAN 0 then connects to the vehicle diagnostic bus.
  • REXGEN 1 or REXGEN 2. Plug it into the logger's 9-way connector.
  • A Kvaser interface. Plug it into the interface's 9-way connector.
INF4103 wiring, OBD plug to 9-way socket
OBD pin Signal 9-way pin
4 Power ground 5
5 Signal ground 3
6 CAN-H (high-speed bus) 7
7 K-Line (ISO 9141) 4
14 CAN-L (high-speed bus) 2
16 Battery supply, passed through 9

The other pins are not connected.

INF4103 specifications
Item Value
Length 1700 mm
Wire 22 AWG
Connector A 9-way D-Sub socket with screws, wired to CiA 303-1
Connector B OBD-II 16-way plug, 180 degree
Operating temperature -20 to +80 °C
Weight 236 g

INF4206 power adapter cable

INF4206 cable: a vehicle auxiliary power plug and red and black banana plugs feeding two 9-way D-Sub connectors
INF4206 takes power from an auxiliary power outlet or straight from the battery.

Use INF4206 to power a REBEL or REXGEN logger or a K-Series module when you cannot take power from the OBD port. Power comes from the vehicle's auxiliary power outlet (cigar lighter) or, through the banana plugs, from the battery. Some REXGEN documents call it the multipower supply and CAN cable.

INF4206 power adapter cable INF4206 · POWER ADAPTER INF4206 power adapter cable Auxiliary power plugsupply and ground, LEDRed banana plugsupply positiveBlack banana plugpower groundsupplyCAN/PWR/K-Linefemale, screws2CAN low3Ground4K-Line5Power ground7CAN high9Supply, passed throughpins 2, 3, 4, 7CAN/K-Linemale, nuts2CAN low3Ground4K-Line7CAN highno power on this leadExample useLoggerCAN0/PWR leadINF4206socket, then plugINF4103OBD to 9-wayVehicleOBD portSupply pair, positive and groundCAN and K-LinePowerGroundThe dashed row is an example use. None of these cables regulates the supply: check it against the device. INF4206 has no OBD and no FlexRay connector; an old specification table listed one in error. 230 mm.

The cable has two 9-way leads:

  • CAN/PWR/K-Line, female socket with screws. Carries CAN, K-Line and the supply. Plug the logger's CAN0/PWR lead or the module's CAN input into it.
  • CAN/K-Line, male plug with nuts. Passes CAN and K-Line on without power. For example, plug it into the 9-way socket of an INF4103 to reach the vehicle diagnostic bus.
INF4206 CAN/PWR/K-Line lead, female 9-way D-Sub
Pin Signal
2 CAN-L
3 Ground
4 K-Line
5 Power ground
7 CAN-H
9 Supply from the auxiliary plug or the red banana plug, passed through
INF4206 CAN/K-Line lead, male 9-way D-Sub
Pin Signal
2 CAN-L
3 Ground
4 K-Line (ISO 9141)
7 CAN-H
INF4206 power inputs
Input Function
Auxiliary power plug Supply positive and ground from the outlet, with an indicator LED
Red banana plug Supply positive
Black banana plug Power ground

The cable is 230 mm long with 26 AWG (0.4 mm) wire. It weighs 219 g and works from -20 to +80 °C. Some older documents call it an OBD cable, but it has no OBD connector.

Check the supply against the device

None of these cables regulates the supply. Some older pages label the supply pin "4.5 to 36 V", but the pin carries whatever the vehicle or battery supplies. Check that it suits the logger or module you connect.

Supply range of each logger and module these cables connect to
Logger or module Supply range
REBEL LT 4.5 to 36 V DC
REBEL CT 4.5 to 36 V DC
REXGEN 1 and REXGEN 2 +5 to +27 V DC, +34 V maximum
K-TC 4.5 to 31 V DC
K-BOX and K-AN8 6 to 36 V DC

Check the highest voltage the supply reaches with the engine running, not only its nominal voltage. The part number index links the pinout guide of every logger and module. See Cables and accessories: part number index.

Products in this guide

K-AN8

Analogue to CAN converter

View K-AN8 Ask an engineer

K-BOX

Multi-sensor data acquisition

View K-BOX Ask an engineer

K-TC

Thermocouple data logger

View K-TC Ask an engineer

REBEL CT

Automotive engineering logger

View REBEL CT Ask an engineer

REBEL LT

Vehicle diagnostics logger

View REBEL LT Ask an engineer

REXGEN 1

Vehicle black box

View REXGEN 1 Ask an engineer

REXGEN 2

Evidence data logger

View REXGEN 2 Ask an engineer

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