2-Pin Automotive Buzzer / Horn Wire Harness Connector – OEM 35126365 / 35126363 / 15491547 / 2973781
Direct OEM-specification replacement for the 2-pin wire harness connector used on automotive buzzers, horns, and warning tone generators. Cross-references part numbers 35126365, 35126363, 15491547, 2973781, and 33222138. Uses the 1.2mm contact series (Nylon PA66 housing). Used across GM, Opel, Vauxhall, and Chevrolet platforms for horn relay circuits, seatbelt warning buzzers, and reverse warning tones.
Buzzer and horn connectors are frequently damaged during dashboard removal, airbag service, or steering column work. The 2-pin 1.2mm series housing is compact and the locking tab fractures easily under lateral stress. A failed buzzer connector causes the seatbelt warning chime, reverse warning tone, or horn to become inoperative — faults that are often misdiagnosed as a failed buzzer unit or BCM output. Replacing the connector is the correct first step before condemning the buzzer or relay.
| OEM Number | Application |
|---|---|
| 35126365 | Primary GM/Opel buzzer connector |
| 35126363 | Alternate part number |
| 15491547 | GM North America equivalent |
| 2973781 | Opel/Vauxhall part number |
| 33222138 | Superseded / cross-reference number |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | Power supply to buzzer / horn | No tone, buzzer completely inoperative |
| 2 | Ground / trigger signal from BCM | Buzzer inoperative or continuous tone |
| Attribute | Detail |
|---|---|
| Pin Count | 2-Pin |
| Contact Series | 1.2mm pitch |
| OEM Part Numbers | 35126365 / 35126363 / 15491547 / 2973781 / 33222138 |
| Housing Material | Nylon PA66 |
| Application | Buzzer, horn, warning tone generator harness |
| Compatible Brands | GM, Opel, Vauxhall, Chevrolet, Buick |
| Terminal Included | Yes |
Q: My seatbelt warning chime stopped working — could it be the connector?
A: Yes. The seatbelt warning buzzer uses a dedicated 2-pin connector on GM/Opel platforms. If the connector locking tab has fractured (common after dashboard or airbag service), the buzzer loses its ground/trigger signal (Pin 2) and becomes inoperative. Inspect the connector before replacing the buzzer unit or BCM.
Q: What fault codes does a failed buzzer connector cause?
A: Buzzer circuit faults typically appear as BCM body codes such as B0085 (horn output circuit) or warning chime-specific codes. On some platforms, a failed seatbelt buzzer connector may also trigger a B0020 (driver seatbelt switch circuit) fault if the BCM cannot confirm the warning tone was activated.
Q: Is this the same connector used for the reverse warning buzzer?
A: Yes. GM/Opel standardised the 2-pin 1.2mm series connector (35126365) across multiple warning tone applications including seatbelt chime, reverse warning, and door ajar buzzer. Verify the OEM part number on your existing connector before ordering.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
Be the first to know about new collections and special offers.
2 Pin Connectors
