Wiring Diagram AUDI A4 1998 - Audi duo - auxiliary heater
| D | Ignition/starter switch |
| E16 | Heating switch, heat output |
| F17 | Overheating switch, in heater |
| G18 | Temperature sensor |
| G64 | Flame monitor |
| J8 | Auxiliary heater relay |
| J104 | ABS with EDL control unit |
| J162 | Heater control unit |
| J360 | High heat output relay |
| J367 | Battery monitor control unit |
| J439 | Automatic clutch control unit |
| Q9 | Glow plug for heater |
| S62 | Auxiliary heater fuse |
| S211 | Fuse 1 (X) |
| T2au | 2-pin connector, black |
| T3ap | 3-pin connector, grey, right connector point, A pillar |
| T6ap | 6-pin connector, black |
| T10b | 10-pin connector, orange, left connector point, A pillar |
| T10aq | 10-pin connector, black, left connector point, A pillar |
| T16 | 16-pin connector, centre console rear |
| V6 | Combustion air blower |
| V55 | Recirculating pump |
| 81 | Earth connection -1-, in dash panel wiringharness |
| 238 | Earth connection -1-, in interior wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A15 | Positive (+) connection (15), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
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