Matching FAKRA connectors is not simply a matter of choosing the same housing color. In automotive RF systems, the color code helps identify the connector family and reduces assembly errors, but the actual mating compatibility depends on the mechanical keying, connector code, gender, cable type, and the application defined by the module or vehicle platform. For GPS and GNSS antennas, LTE and 5G telematics units, AM/FM radio, infotainment systems, camera links, and other automotive communication interfaces, buyers and engineers should verify the FAKRA code together with the cable assembly drawing, impedance, frequency range, insertion loss, and mounting style.
What FAKRA Color Code Means
FAKRA color code is a visual identification system used on automotive RF connector housings. Each code uses a defined housing color and a matching mechanical layout, giving assembly teams a quick way to separate antenna, navigation, cellular, radio, camera, and telematics lines during production and service work.
The core value of the color code is fast recognition. A cable harness may contain several similar coaxial cable assemblies routed through the same vehicle area. Color coding reduces port confusion, while the connector code and keying keep each RF path aligned with its assigned module function.
Color Code vs Mechanical Keying
Color code identifies the connector family by sight. Mechanical keying defines the physical mating geometry. Two parts with similar housing colors may still have different key positions, connector genders, or mounting styles, so color matching works best as the first check in a wider verification process.
A correct FAKRA match usually combines five items: code, keying, gender, connector orientation, and cable assembly specification. The same vehicle platform may use straight connectors in open routing areas and right angle connectors near compact module housings. The housing color gives the technician a clue, while the cable drawing gives the supplier a buildable part.
Common FAKRA Codes
FAKRA systems commonly use codes such as A, B, C, D, E, F, G, H, I, K, L, M, N, and Z. Typical housing colors include black for A, cream white for B, blue for C, bordeaux violet for D, green for E, brown for F, gray for G, violet for H, beige for I, curry yellow for K, carmine red for L, pastel orange for M, pastel green for N, and water blue for Z.
Application mapping can vary by platform. Code C is often associated with GPS, code D with mobile communication, code E and F with television paths, code G with remote control or keyless entry, code I with Bluetooth, and code Z with neutral coding. This mapping gives a useful starting point, while the project drawing, module port definition, and approved part number set the final selection.
Matching FAKRA Connectors by Application
For GPS and GNSS antenna links, the connector choice needs to match the navigation module port and the antenna side interface. Cable length, shielding, and insertion loss deserve early review because weak satellite signals leave less margin for excess coaxial loss, especially when the route runs from a roof antenna to a control unit.
For LTE, 5G, WiFi, Bluetooth, and V2X telematics modules, port density and labeling become more important. One module may carry several RF ports with similar external shapes. A clear connector code, cable label, and port map can reduce assembly errors when several automotive coaxial cable assemblies enter the same housing area.
For multi port telematics modules that combine LTE, 5G, WiFi, Bluetooth, and GNSS links, you can also review our guide to FAKRA cable assemblies for telematics modules for cable labeling, connector coding, and assembly specification details.
For AM, FM, DAB, SDARS, and infotainment systems, start with the signal name and the head unit or antenna module interface. The same vehicle project may use separate FAKRA codes for radio antenna, satellite radio, TV tuner, and multimedia input, so the order request should list the port name on each end, not just the housing color.
For camera and ADAS links, confirm whether the interface is standard FAKRA, Mini FAKRA, HSD, or automotive Ethernet before selecting the cable. A useful request should include the camera connector, ECU connector, cable length, bend direction, and available space behind the connector, because these details affect whether a straight or right angle assembly can be installed.
Key Specifications to Check
Most standard FAKRA cable assemblies are built for 50 ohm automotive RF links and are commonly specified up to 6 GHz when the connector and cable are matched correctly. Higher frequency or dense module layouts may move the design toward Mini FAKRA or other compact automotive coaxial systems, depending on the module interface and platform requirement.
For a FAKRA II SMB style assembly, typical reference values may include VSWR up to 1.3 at 6 GHz, housing retention above 110 newtons after latching, mating force up to 25 newtons, and an operating range from minus 40 degrees Celsius to 105 degrees Celsius. These values help buyers compare parts, but the accepted limits should follow the project drawing and sample approval record.
FAQ
Conclusion
A good FAKRA match is built from more than a color check. The housing color helps identify the port, the keying confirms the mating geometry, and the cable assembly data shows whether the finished link can meet the required frequency, loss, routing, and installation needs. For buyers and engineers, the safest approach is to confirm the code, interface, cable type, length, and test requirements before moving from sample approval to production.