North American Harness Assessment Cheat Sheet

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.

Vehicle Assessment Instructions

Request a complete vehicle list from the customer, which includes:

VIN
Manufacturer
Model
Year

Use this Excel template to prepare a list of vehicles for harness assessment.

Ensure that there is no missing information or incomplete entries.
Normalize the manufacturer and model names.

For example, change all variations of model name like F-150 and F150 in a single way.

Use the Summary tab to get counts of each vehicle type.

Use the compatibility table to determine which harnesses are required for each vehicle.

Vehicle Type Overview

Light-Duty Vehicles

All light-duty vehicles made in 1997 and afterwards will have a 16-pin OBD II port. They will be able to use the standard HRN-BS16S4 harness or the HRN-GS16K2 universal T-harness. Review the compatibility table for any exceptions.

Heavy-Duty Trucks

Listed below are a number of common heavy-duty truck manufacturers:

International Freightliner Peterbilt Kenworth Sterling	Mack Volvo Isuzu Mitsubishi (Fuso)

GO Rugged

If ordering a GO RUGGED device the HRN-RS12S2 will be required with any extension or T-harness (including 3-wire harness).

For more detailed information about installation and harness types, please see the Vehicle Specific Installation Notes and the Harness Identification and Application document.

Finding the Diagnostic Port

There are several websites that can help you find the diagnostic port in your vehicle:

Innova DLC — North America only
CarMD — North America only
The Diagnostic Box — North America & Europe
Outils OBD Facile — North America & Europe

VIN Decoding

If you only have a VIN, there are plenty of online VIN decoding sites that you can use to retrieve the Make, Model and Year of a vehicle.

Harness Estimates

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

Compatibility Table

Light Duty

Make	Model	Year	Straight Harness	T-Harness	Notes
All	All	<1996	HRN-CW03S3		Any vehicle without an OBDII port
All light duty	All	1997+	HRN-BS16S4	HRN-GS16K2	See exceptions below
Ford
Ford	F150–F550	1997+	HRN-BS16S4	HRN-GS16K2
Ford	F650+	1997+	HRN-DS09S4	HRN-GS09K2	Please confirm diagnostic port to ensure it is 9-pin prior to purchasing 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 OBDII port
Ford	Fusion	1997+	Must use T-harness	HRN-GS16K2	Must use T-harness due to the location of the OBDII port
Dodge
Dodge	All	1997+	HRN-BS16S4	HRN-GS16K2	Please confirm 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	HRN-GS16K2	Please confirm diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.
Chevrolet	C4–C7 & T6–T8 Series	2006–2009	HRN-BS16S4	HRN-GS16K2	Please confirm diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.
GMC	C4–C8 & T6–T8 Series	2006–2009	HRN-BS16S4	HRN-GS16K2	Please confirm 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 OBDII port
Nissan	UD	2009	HRN-DS09S4	HRN-GS09K2	Vehicle has two diagnostic ports — do not connect to OBDII port
Isuzu
Isuzu	All	1997+	HRN-BS16S4	HRN-GS16K2	Please confirm diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.
Mercedes-Benz
Mercedes	All	1997+	HRN-BS16S4	HRN-GS16K2
Mercedes	Sprinter	2019+	HRN-CP04A2 + HRN-CM24Y1		907 & 910 (EU) chassis only
Hino
Hino	All	1997+	HRN-BS16S4	HRN-GS16K2	Vehicle has two diagnostic ports - Data typically comes through the 16-pin but in some cases the 9-pin. Please contact Geotab to confirm.
Hino	300 Series	1997-2016	HRN-BS16S4	HRN-GS16K2
Hino	200-500 Series	2016+		HRN-CM24Y1 + HRN-CH06A2	Special adapter HRN-CH06A2 harness required
Mitsubishi
Mitsubishi	All Light Duty	1997+	HRN-BS16S4	HRN-GS16K2	Please confirm diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.
Mitsubishi Fuso	All	<2009	HRN-CW03S3	N/A	Please use HRN-CW03S3 unless confirmed OBDII port with Auxiliary port. If Auxiliary port present, use HRN-BU16Y5.
Mitsubishi Fuso	All	2010+	HRN-BU16Y5	N/A	Must use HRN-BU16Y5. May require HRN-CW03S3 if no Auxiliary port is available.
Workhorse Chassis
Workhorse Chassis	All	1999–2002	HRN-BS16S4	HRN-GS16K2	Please confirm diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.

Electric Vehicles

Make	Model	Year	Straight Harness	T-Harness	Notes
Tesla
Tesla	Model S	2012-2015	HRN-CT06A1 + HRN-CM24Y1	N/A	*Please see row below for 2015 Model S
Tesla	Model S	2015+	HRN-CT06A11 + HRN-CM24Y1	N/A	Only for models with last 6 digits of VIN greater than P70000
Tesla	Model X	All	HRN-CT06A11 + HRN-CM24Y1	N/A
Tesla	Model 3	2018+	N/A	HRN-CT20T1	Diagnostic port can be found in the floor in the middle of the rear

Heavy Duty

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	2000–2007	HRN-DS06S4	HRN-DS06T2
International	7300–9900	2008+	HRN-DS09S4	HRN-GS09K2
International	5500i–9900i	2000–2007	HRN-DS06S4	HRN-DS06T2
International	5500i–9900i	2008+	HRN-DS09S4	HRN-GS09K2
Peterbilt & Kenworth
Peterbilt	All	2000–2007	HRN-DS09S4	HRN-GS09K2	Please confirm 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 OBDII port
Peterbilt	All	2017+	Must use T-harness	HRN-GS09K2 & HRN-BS04A1	See next row for more info.
Peterbilt	Paccar Motors MX13 and MX15	All	N/A	HRN-BS04A1	If vehicle is using Paccar Motors MX13 and MX15, must use HRN-BS04A1. Please see the next row if the vehicle is equipped with a 14 pin (RP1226) port. Must use HRN-CS14S2.
Peterbilt	All models	2019+	HRN-CS14S2		If vehicle is equipped with a 14 pin (RP1226) port, use this harness as more data is sent through this port
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 OBDII port
Kenworth	All	2017+	Must use T-harness	HRN-GS09K2 & HRN-BS04A1	See Installation Notes for more info.
Kenworth	Paccar Motors MX13 and MX15	All	N/A	HRN-BS04A1	If vehicle is using Paccar Motors MX13 and MX15, must use HRN-BS04A1. Please see the next row if the vehicle is equipped with a 14 pin (RP1226) port. Must use HRN-CS14S2.
Kenworth	All models	2019+	HRN-CS14S2		If 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 OBDII port
Freightliner	All models	2019+	HRN-CS14S2		If vehicle is equipped with a 14 pin (RP1226) port, use this harness as more data is sent through this port
Volvo
Volvo	All Heavy Duty (ie. VNM, VNL, VNX, VHD, VAH, VNRe)	2000–2013	HRN-DS09S4	HRN-GS09K2
Volvo	All Heavy Duty (ie. VNM, VNL, VNX, VHD, VAH, VNR)	2014-2018	HRN-BS16S4	HRN-GS16K2
Volvo	VNL	2019	HRN-DS09S4	HRN-GS09K2	Please confirm diagnostic port of 2019 Volvo trucks as we have seen a switch back to 9-pin in the VNL.
Volvo	All models	2019+	HRN-CS14S2		If vehicle is equipped with a 14 pin (RP1226) port, use this harness as more data is sent through this port
Mack
Mack	All	2000–2013	HRN-DS09S4	HRN-GS09K2
Mack	All	2014+	HRN-BS16S4	HRN-GS16K2	Please confirm diagnostic port to ensure it is 16-pin OBD II prior to purchasing harness.
Mack	All models	2019+	HRN-CS14S2		If vehicle is equipped with a 14 pin (RP1226) port, use this harness as more data is sent through this port
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	HRN-GS16K2

Equipment & Off Road Assets

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, only the HRN-RW03S4 will be required. See exceptions below.
Caterpillar	All equipment with diagnostic port	2000–2016	HRN-DS09S4	HRN-GR09K1 + HRN-RMRCA1	Please confirm there is a diagnostic port prior to purchasing harness. If no port exists, HRN-RW03S4 will be 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 harness. If no port exists, HRN-RW03S4 will be required. Some 9-pin diagnostic ports in Cat equipment may have a different pin configuration and would require the HRN-DC09T2 & HRN-RS12S2.
John Deere	All	2000+	HRN-DS09S4	HRN-GR09K1	Please confirm there is a diagnostic port prior to purchasing harness. If no port exists, HRN-RW03S4 will be required.
Komatsu	All	2000+	HRN-DS09S4	HRN-GR09K1	Please confirm there is a diagnostic port prior to purchasing harness. If no port exists, HRN-RW03S4 will be required.

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Harness Assessment Cheat Sheet

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