Hyundai / Kia 14-Pin Headlamp Connector – OEM GL301-14021 / GL291-14021 | Full-Function LED
Direct OEM-specification replacement for the Hyundai and Kia 14-pin headlamp harness connector. Cross-references OEM part numbers GL301-14021 and GL291-14021. The 14-pin configuration integrates all headlamp functions — low beam, high beam, DRL, position light, turn signal, AFS motor control, and LED driver module communication — in a single connector. Available bare or with 15cm pre-wired leads.
| Pin Group | Function | Failure Symptom if Corroded |
|---|---|---|
| Pins 1–2 | Low beam LED driver power and ground | Low beam not illuminating |
| Pins 3–4 | High beam LED driver power and ground | High beam not illuminating |
| Pins 5–6 | DRL / position light LED power and ground | DRL or position light out |
| Pins 7–8 | Turn signal LED power and ground | Front turn signal not functioning |
| Pins 9–10 | AFS motor control signal and ground | AFS fault warning, headlight not swivelling |
| Pins 11–12 | LIN bus / LED module communication | Headlamp module fault code, B-code logged |
| Pins 13–14 | Ambient light sensor or additional control | Auto headlight not activating |
| Attribute | Detail |
|---|---|
| Pin Count | 14-Pin |
| OEM Part Numbers | GL301-14021 / GL291-14021 |
| Housing Material | Nylon (PA66) |
| Wire Option | Bare connector / 15cm pre-wired leads |
| Application | Full-function LED headlamp assembly harness |
| Compatible Brands | Hyundai, Kia |
Q: My Hyundai headlamp shows a fault code but the LEDs look fine — is it the connector?
A: Hyundai/Kia LED headlamp modules communicate via LIN bus (Pins 11–12). A corroded LIN bus pin causes the BCM to log a headlamp module fault even if the LEDs are physically illuminating. Inspect the 14-pin connector before replacing the headlamp assembly.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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14 Pin Connectors
