Audi 3-Pin 1.5/2.8mm Reading Light Wire Harness Connector – OEM 893971633 / 893971993
Direct OEM-specification replacement for the 3-pin wire harness connector used on reading lights (interior map lights / courtesy lights) across Audi platforms. Cross-references Audi OEM part numbers 893971633, 893971993, 893 971 633, and 893 971 993. Uses a 1.5/2.8mm hybrid contact series — a mixed-pitch connector combining low-current signal pins (1.5mm) and higher-current power supply pins (2.8mm) in a single housing, used for interior lighting circuits that include both a dimming signal and a direct power supply.
The 3-pin reading light connector is located in the headliner or overhead console, connecting the reading light assembly to the interior lighting harness. It is exposed to heat from the cabin and mechanical stress from repeated opening and closing of the sunroof or overhead console. A failed connector causes the reading light to be permanently off or permanently on, and may also affect the interior courtesy light circuit if the ground pin is open.
| OEM Number | Application |
|---|---|
| 893971633 | Audi 3-pin reading light connector (primary) |
| 893971993 | Audi 3-pin reading light connector (alternate) |
| Pin | Function | Failure Symptom if Open |
|---|---|---|
| 1 | Power supply (12V, switched) | Reading light not illuminating |
| 2 | Dimming / door trigger signal | Light not responding to door open / dimmer |
| 3 | Ground / earth | Reading light inoperative |
| Attribute | Detail |
|---|---|
| Pin Count | 3-Pin |
| Contact Series | 1.5/2.8mm hybrid pitch |
| OEM Part Numbers | 893971633 / 893971993 |
| Applications | Reading light (map light), interior courtesy light, overhead console lighting |
| Compatible Models | Audi 80 (B3/B4), Audi 90, Audi A4 B5, Audi A6 C4 |
| Terminal Included | Yes |
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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3 Pin Connectors
