Fleet Telematics and ELD Harness (J1939 / RP1226 / OBD2)
Product Overview
This fleet telematics harness is a custom overmolded cable assembly that connects a telematics or ELD unit to the vehicle data bus through the J1939 9-pin, J1708 6-pin, RP1226 14-pin or OBD2 16-pin diagnostic port.
Cactus Electronics supplies these harnesses to ELD hardware manufacturers in the United States, where they are fitted to heavy and light trucks of several brands. The model list below covers J1939 Type I and Type II splitters and Y-cables, RP1226-to-J1939 adapters, FMS cables and device-specific harnesses for CalAmp and Geotab units. Each harness is built to the customer drawing, overmolded, and 100 % electrically tested before packing.
Specifications
The part numbers below are existing builds and can be re-configured. Full drawings, tolerances and the current specification for each item are issued with the quotation.
J1939 Type2 Splitter Cable
PN: J1939T2-PR2-1FT
J1708 Dual to Open Cable
PN: J1708-PRO-2FT
J1939 Type2 Universal to OBD2 Female Cable
PN: J1939T2-PRO-1FT-U
Fleet Management System Cable for Europe
PN: FMS-01-5FT
RP1226 to J1939 Type1 Cable
PN: J1939T1-RRP1226-1FT
OBD2 Universal Splitter Cable
PN: OBD2-M2F-2FT-U
J1939 Type1 Y Cable for CalAmp 5C9095-2
PN: J1939T1-PRY-6FT
Connectorised Harness for CalAMP LMU3640 5C360
PN: ML24-4-4-3FT-F
J1939 Type2 9 Pin J1939 Type 2 for CalAmp jPOD 5C992-2
PN: J1939T2-RPHDB15-5FT-M
Splice-in 5-Wire Power Starter Disable Kit for CalAmp 5C862
PN: RLX-5-2FT-R
OBDII T-harness for the GO device HRN-BS16T2
PN: OBD2-M2F-2FT
14-pin harness for vehicles HRN-DC14S2
PN: DT14-14C14-2FTMaterial & Rating
- J1939 cable — shielded twisted pair, 120 Ω characteristic impedance, 250 kbit/s (Type I) or 500 kbit/s (Type II)
- J1708 cable — twisted pair for the 6-pin J1708 bus
- RP1226 cable — 14-pin 2.5 mm sealed connector system
- Contacts — brass, gold-plated or tin-plated
- Housing — PA66 or PA66-GF, sealed circular connector, with wedgelock
- Overmold — PA66-GF body with TPE or TPU strain relief, black or custom colour
- Temperature — 80 °C with PVC insulation, 105 °C with XLPE or TPE; rated range stated on each drawing
- Voltage — 12 V and 24 V vehicle systems
Certification
Cactus Electronics is certified to ISO 9001, IATF 16949 and UL and manufactures to the IPC/WHMA-A-620 workmanship standard. Raw materials comply with RoHS. Every assembly passes 100 % electrical testing - continuity, insulation resistance and withstand voltage - before packing, and the QC-to-production personnel ratio is 1:3.
Application
These harnesses are fitted where a telematics unit has to read the vehicle bus and, in some builds, switch a circuit such as starter disable.
- ELD compliance devices on heavy trucks and light commercial vehicles
- Fleet management and GPS tracking installations, including plug-and-play OBD2 T-harnesses
- RP1226 to J1939 adapters for newer truck models with a 14-pin telematics port
- FMS interface cables for the European fleet management standard
- Device-specific harnesses for CalAmp LMU3640, jPOD 5C992-2 and Geotab GO units
- Starter-disable and power kits for anti-theft and immobiliser functions
Custom Options
- Connector series and gender: J1939 9-pin Type I or Type II, J1708 6-pin, RP1226 14-pin, OBD2 16-pin
- Pinout, cable length, wire gauge, twisted-pair or shielded construction
- Splitter, Y-cable, T-harness and adapter configurations
- Overmold shape and colour, laser marking of part number or customer logo
- Samples in 3–7 working days; MOQ confirmed per project
- Customer carton marking and DDP delivery on request
FAQ
What is the operating temperature rating of this harness?
Standard PVC-insulated assemblies are rated to 80 °C; XLPE or TPE insulation raises the rating to 105 °C. For engine-bay or near-exhaust routing we quote higher-temperature insulation and sleeving. The exact operating range for a part number is stated on its drawing and confirmed in the sample test report.
Is this overmolded harness waterproof?
Overmolded versions seal the connector-to-cable junction with a molded body, so a mated pair is protected against water and dust; the ingress protection level (typically IP67 for a mated pair) is specified on the drawing and verified during sample validation. Non-overmolded assemblies can be supplied with heat-shrink or grommet sealing instead.
Can I customize the pinout and connector type?
Yes. Pinout, connector series and gender, cable length, wire gauge, jacket colour and overmold shape are all customer-defined. Send a drawing, a sample, or a pinout table and we return a 2D/3D drawing prepared to IPC/WHMA-A-620 for approval before tooling.
What is your MOQ for custom ELD telematics cable?
MOQ is confirmed per project and depends on harness complexity, connector cost and tooling. Prototype and pilot batches are accepted before mass production, so a new ELD programme can start with sample quantities.
What testing standards do you apply for truck harness?
Production follows IPC/WHMA-A-620. Every assembly is 100 % electrically tested for continuity, insulation resistance and withstand voltage; the in-house lab adds temperature and humidity cycling, salt spray, connector insertion and withdrawal force, and cable bending tests. Inspection records are kept in the ERP system.
Is this cable compatible with ELD trackers for heavy trucks?
Yes. The range covers the interfaces used by ELD and fleet-tracking units on heavy trucks: J1939 9-pin Type I and Type II, J1708 6-pin, RP1226 14-pin and OBD2 16-pin. Existing builds for CalAmp (LMU3640, jPOD 5C992-2) and Geotab GO devices are listed under Specifications. Tell us the tracker model and we confirm the mating connector.
Related pages: OBD2 16-pin harness, J1939, J1708 and RP1226 connectors, custom harness flow, and request a quotation.