WARNING! Use Geotab telematics devices only with Geotab-approved harnesses acquired from Geotab-authorized channels. Use of non-Geotab harnesses from unauthorized channels can cause serious safety risks, including fire, and can lead to serious personal injury and/or damage to the vehicle.

! IMPORTANT: For heavy-duty trucks, always use a vehicle-specific harness when offered by Geotab or the vehicle manufacturer (see Harness Identification and Application [PUB] and Harness Assessment Cheat Sheet GUIDE V2.0 [PUB]). Where a heavy-duty truck-specific harness is not offered by Geotab or the vehicle manufacturer, use the adapter harness (HRN-CG13S1) for any 16-pin (OBDII) installation method to avoid possible GO device damage.

✱ NOTE: A standard GO9 device is also a 16-Pin Port, so a harness may not be required.

! IMPORTANT: OBD-II and RP1226 diagnostic ports are supported. For further information to compare and contrast OBD-II and RP1226, please visit the following link: https://gtb.page.link/hKF7.

! IMPORTANT: Geotab does not guarantee that the following suggestions are 100% accurate. They are best guesses and are considered to be estimates based on experience.

Make

Model

Year

Straight Harness

T-Harness

Notes

All

All

All

<1996

HRN-CW03K3

Any vehicle without a diagnostic port.

All light duty

All

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Applies to all light duty makes and models. See exceptions below.

Ford

Ford

F150–F550

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Ford

F650+

1997+

HRN-DS09S4

HRN-GS09K2

Please confirm the diagnostic port to ensure it is 9-pin prior to purchasing a 9-pin harness. Could have 16-pin OBD II.

Ford

Fiesta

1997+

Must use T-harness

HRN-GS16K2

Must use T-harness due to the location of the diagnostic port. The 2017+ Mk7 models can be directly plugged into the diagnostic port.

Ford

Fusion

1997+

Must use T-harness

HRN-GS16K2

Must use T-harness due to the location of the diagnostic port.

Dodge

Dodge

All

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.

GM/Chev

GM/Chev

All light-duty GM/Chevy cars/trucks (i.e. Cruze, Malibu, Silverado, Sierra, etc.)

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.

Chevrolet

C4–C7 & T6–T8 Series

2006–2009

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.

GMC

C4–C8 & T6–T8 Series

2006–2009

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.

Nissan

Nissan

Frontier

1997+

Must use T-harness

HRN-GS16K2

Must use T-harness due to the location of the diagnostic port.

Nissan

UD

2009

HRN-DS09S4

HRN-GS09K2

The vehicle has two diagnostic ports — do not connect to the OBD II port.

Isuzu

Isuzu

All

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing the harness.

Isuzu

Diesel Vehicles

2017+

N/A

HRN-CM24Y1 + HRN-CI04A2

The optional Isuzu FMS port provides features required for ELD solutions, such as odometer, which are not provided by HRN-GS16K2.

Requires HRN-CM24Y1 (from Geotab) and FMS kit (CAN converter) #8983519390, which if not ordered at time of manufacture must be ordered and activated through an Isuzu dealer.

Mercedes-Benz

Mercedes

All

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Mercedes

Sprinter

2019+

HRN-CP04A2 + HRN-CM24Y1 (for PSM connection)

907 & 910 chassis only.

Hino

Hino

All

1997-2011

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

The vehicle has two diagnostic ports.  Data typically comes through the 16-pin but in some cases the 9-pin.

Hino

200-500 Series

2012-2018

HRN-CM24Y1 + HRN-CH06A2

Special adapter HRN-CH06A2 harness required.

Hino

100 Series

2012-2018

HRN-CM24Y1 + HRN-CH10A2

Special adapter HRN-CH10A2 harness required.

Hino

All

2019-2020

HRN-CM24Y1 + HRN-CH10A2

Special adapter HRN-CH10A2 harness required.

Mitsubishi

Mitsubishi

All Light Duty

1997+

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing the harness.

Mitsubishi Fuso

All

<2009

HRN-CW03K3

N/A

Please use HRN-CW03K3 unless confirmed diagnostic port with Auxiliary port. If an Auxiliary port is present, use HRN-BU16Y5.

Mitsubishi Fuso

All

2010+

HRN-BU16Y5

N/A

Must use HRN-BU16Y5.

May require HRN-CW03K3 if no Auxiliary port is available.

Workhorse Chassis

Workhorse Chassis

All

1999–2002

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

Please confirm the diagnostic port to ensure it is 16-pin OBD II prior to purchasing the harness.

✱ NOTE: All BYD trucks made in North America require a proprietary harness, which Geotab does not make in-house. For BYD vehicles outside North America please work with your regional Solutions Engineering rep, the EV team, and your BYD point of contact to determine the appropriate harness to use.

Make

Model

Year

Straight Harness

T-Harness

Notes

Tesla

Tesla

Model S

2012-

mid 2015*

HRN-CT06A1 + HRN-CM24Y1

N/A

Please check the diagnostic connector of any MY2015 Model S prior to purchasing the harness.

Tesla

Model S

Mid 2015+

HRN-CT06A11 + HRN-CM24Y1

N/A

Tesla

Model X

All

HRN-CT06A11 + HRN-CM24Y1

N/A

Tesla

Model 3

2018

N/A

HRN-CT20T1

The diagnostics port can be found in the rear behind the lower center console panel.

Tesla

Model 3

2019+

N/A

HRN-CT20T11

The diagnostics port can be found in the rear behind the lower center console panel.

Tesla

Model Y

2019+

N/A

HRN-CT26T1

The diagnostics port can be found in the rear behind the lower center console panel.

BYD

 BYD

All Bus Models

All

  HRN-BS16S4

 HRN-GS16K2

Only applicable for BYD buses made in North America. For BYD buses made outside North America, please work with your Geotab Solutions Engineering team member and BYD person of contact to determine the appropriate harness to use.

Make

Model

Year

Straight Harness

T-harness

Notes

All Heavy Duty (see list above)

All

1997–1999

HRN-DS06S4

HRN-DS06T2

International

International

7300–9900

2000–2005

HRN-DS06S4

HRN-DS06T2

For MY2005, please check your diagnostic port prior to purchasing the harness.

International

7300–9900

2006+

HRN-DS09S4

HRN-GS09K2

International

5500i–9900i

2000–2007

HRN-DS06S4

HRN-DS06T2

Please check your diagnostic port prior to purchasing the harness.

International

5500i–9900i

2008+

HRN-DS09S4

HRN-GS09K2

Peterbilt & Kenworth

Peterbilt

All

2000–2007

HRN-DS09S4

HRN-GS09K2

Please confirm the diagnostic port, as in some cases the vehicle may have a 6-pin port and will require the HRN-DS06T2.

Peterbilt

All

2008+

Must use T-harness

HRN-GS09K2

Must use T-harness due to the location of the diagnostic port.

Peterbilt

All

2017+

Must use T-harness

HRN-GS09K2

 Peterbilt

All

2017+

N/A

HRN-GS09K2 & GO9

To guarantee proper operation of the GO device data points, it is recommended that  a GO9 is used exclusively for 2017+ Peterbilt. Some motors (MX13 and MX15) may not operate properly on G07 and G08 platforms.

Peterbilt

All models

2019+

HRN-CS14S21

If the vehicle is not equipped with a 14-pin (RP1226) diagnostic connector use the 9-pin harness HRN-GS09K2.

Kenworth

All

2000–2012

HRN-DS09S4

HRN-GS09K2

Kenworth

All

2013+

Must use T-harness

HRN-GS09K2

Must use T-harness due to the location of the diagnostic port.

Kenworth

All

2017+

Must use T-harness

HRN-GS09K2

See Installation Notes for more information .If the vehicle is using Paccar Motors MX13 and MX15, must use HRN-BS04A1. (GO7 and GO8 only, not required for GO9).

Kenworth

 All

2017+

N/A

HRN-GS09K2 &  GO9

To guarantee the operation of the GO device data points, it is recommended that the GO9 is used exclusively for 2017+ Kenworth. Some motors (MX13 and MX15) may not operate properly on G07 and G08 platforms.

Kenworth

All models

2019+

HRN-CS14S21

If the vehicle is equipped with a 14-pin (RP1226) port, use this harness as more data is sent through this port.

Freightliner

Freightliner

All Medium Duty (i.e. M2 106 Medium Duty)

2000+

HRN-DS09S4

HRN-GS09K2

Freightliner

All Heavy/Super Duty (ie. Cascadia, 114SD, 122SD & 108SD)

2000–2012

HRN-DS09S4

HRN-GS09K2

Freightliner

All Heavy/Super Duty (ie. Cascadia, 114SD, 122SD & 108SD)

2013+

Must use T-harness

HRN-GS09K2

Must use T-harness due to the location of the diagnostic port.

Freightliner

All models

2019+

HRN-CS14S21

HRN-GS09K2

If the vehicle is equipped with a 14-pin (RP1226) port, use HRN-CS14S21 as more data is sent through this port. If not, then use HRN-GS09K2.

Volvo

! IMPORTANT: The OBD II port must not be used for 2019+. Always use a vehicle-specific harness when offered by Geotab or the vehicle manufacturer. Where a heavy-duty truck-specific harness is not offered by Geotab or the vehicle manufacturer, use the adapter harness (HRN-CG13S1) for any 16-pin (OBD II) installation method to avoid possible GO device damage.

Volvo

All Heavy Duty (ie. VNM, VNL, VNX, VHD, VAH, VNR)

2000–2013

HRN-DS09S4

HRN-GS09K2

Models from 2004 to 2013 can either use a HRN-GS09k2 or HRN-CM24Y1+HRN-CE10K2. See the Installation Instructions here. 

Volvo

All Heavy Duty (ie. VNM, VNL, VNX, VHD, VAH, VNR)

2004-2018

N/A

HRN-CM24Y1 + HRN-CE10K2

Models from 2004 to 2013 can either use a HRN-GS09k2 or HRN-CM24Y1+HRN-CE10K2. See the Installation Instructions here.

Volvo

All models

2019-2021

HRN-CM24Y1 + HRN-CE10K2

Installation Instructions

Volvo

All models

2021+

HRN-CS14S21

If the vehicle is equipped with a 14-pin (RP1226) port, use this harness as more data is sent through this port.

Mack

! IMPORTANT: The OBD II port must not be used for 2019+. Always use a vehicle-specific harness when offered by Geotab or the vehicle manufacturer. Where a heavy-duty truck-specific harness is not offered by Geotab or the vehicle manufacturer, use the adapter harness (HRN-CG13S1) for any 16-pin (OBD II) installation method to avoid possible GO device damage.

Mack

All

2000–2005

HRN-DS09S4

HRN-GS09K2

Mack

Cabover models

2000-2012

HRN-GS09K2

Mack

Models: CTP, CXP, CHP, CHU, CXU & GU

2006-2018

N/A

HRN-CM24Y1 + HRN-CK10K2

2006-2018 Mack Install Guide

Mack

Models: GR, AN & PI

2019

N/A

HRN-CM24Y1 + HRN-CE10K2

Installation Instructions

Mack

All models

2019-2021

HRN-CM24Y1 + HRN-CE10K2

Installation Instructions

Sterling

Sterling

All (except Bullet)

1997–1999

HRN-DS06S4

HRN-DS06T2

Sterling

All (except Bullet)

2000+

HRN-DS09S4

HRN-GS09K2

Sterling

Bullet

2008-2009

HRN-BS16S4 or HRN-BS16S4F

HRN-GS16K2

✱ NOTE: The GO RUGGED is mandatory for these vehicles.

Make

Model

Year

Straight harness

T-harness

Notes

All Equipment

All

2000+

See Notes

HRN-GR09K1

General guideline for all yellow iron equipment. Please check the table for specific manufacturers.

Check for diagnostic port. If no port exists, only the HRN-RW03K4 is required. See exceptions below.

Caterpillar

All equipment with diagnostic port

2000–2016

HRN-GR09K1 + HRN-RMRCA1

Please confirm there is a diagnostic port prior to purchasing the harness. If no port exists, HRN-RW03K4 is required.

Caterpillar

All equipment with 14 pin Deutsch diagnostic port

2016+

HRN-DC14S2

N/A

Please confirm there is a 14-pin diagnostic port prior to purchasing the harness. If no port exists, HRN-RW03K4 is required.

John Deere

All

2000+

HRN-GR09K1

Please confirm there is a diagnostic port prior to purchasing the harness. If no port exists, HRN-RW03K4 is required.

Komatsu

All

2000-2009

HRN-GR09K1

Please confirm there is a diagnostic port prior to purchasing the harness. If no port exists, HRN-RW03K4 is required.

Komatsu

All

2010+

HRN-RC12T2

Please confirm there is a 12-pin diagnostic port prior to purchasing the harness. If no port exists, HRN-RW03S4 is required.

✱ NOTE: The GO RUGGED is mandatory for these vehicles.

Harness

Description

HRN-RZ04S4

Ford Model type Engine MSG-425. 2.5 liter (Ground Service Equipment).

HRN-RZ04T4

Kubota Type Engine MA-40-36 (Ground Service Equipment).

Harness

Description

HRN-RW04S4

 All Equipment with Ground Disconnect on Asset and/or NON-ECM with no true ignition.

HRN-RW03S5

NON-ECM with no true ignition using Low Voltage/Primary side of ignition coil.