Wiring Diagram SEAT ALHAMBRA 1999 - Heater control unit D3W - temperature sensor - flame monitor - ambient temperature switch - overheating sensor
| A | Battery |
| F38 | Ambient temperature switch, in plenum chamber, left |
| G18 | Temperature sensor |
| G64 | Flame monitor |
| G189 | Overheating sensor |
| J162 | Heater control unit D3W, in additional heater unit |
| S23 | Heater fuse, No. 24 in fuse box |
| S200 | Fuse -2- (15), No. 3 in fuse box |
| T8 | 8-pin connector, near additional heater unit |
| T10 | 10-pin connector |
| B163 | Positive (+) connection -1- (15), in interior wiring harness |
| B171 | Positive (+) connection -3- (30), in interior wiring harness |
| B172 | Positive (+) connection -4- (30), in interior wiring harness |
Wiring Diagram SEAT ALHAMBRA 1999 - Heater control unit D3W - glow plug for heater - combustion air blower - metering pump
| C | Alternator |
| J162 | Heater control unit D3W, in additional heater unit |
| Q9 | Glow plug for heater |
| T8 | 8-pin connector, near additional heater unit |
| T10 | 10-pin connector |
| V6 | Combustion air blower |
| V54 | Metering pump |
| 34 | Earth point, under driver's seat |
| 284 | Earth connection -6-, in interior wiring harness |
| B177 | Connection (61), in interior wiring harness |
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