Wiring Diagram VW TRANSPORTER 1998 - Front fresh air blower - fresh air blower switch - fresh air blower series resistor - auxiliary heater operation relay
| A1 | Second battery |
| E9 | Fresh air blower switch |
| E20 | Switches and instruments - lighting control |
| E159 | Fresh air and air recirculation switch |
| J485 | Auxiliary heater operation relay, control number (106) |
| L10 | Dash panel insert light bulb |
| L16 | Fresh air control light bulb |
| L39 | Heated rear window switch bulb |
| N24 | Fresh air blower with overheating fuse series resistor |
| S97 | Fresh air blower fuse 1 |
| S98 | Fresh air blower fuse 2 |
| T2 | 2-pin connector |
| T2e | 2-pin connector, behind relay plate |
| T4a | 4-pin connector |
| T6c | 6-pin connector |
| T6g | 6-pin connector |
| TV2 | Terminal 30 junction box |
| V2 | Fresh air blower |
| 33 | Earth point, behind dash panel, right |
| 81 | Earth connection -1-, in dash panel wiring harness |
| 162 | Earth connection, in blower motor wiring harness |
| A28 | Positive connection (58b), in fresh air blower wiring harness |
| A40 | Positive connection -1- (30), in dash panel wiring harness |
Wiring Diagram VW TRANSPORTER 1998 - Pre-selection clock
| A1 | Second battery |
| E1 | Lighting switch |
| E111 | Pre-selection clock |
| L75 | Digital display illumination |
| S129 | Control panel fuse |
| T1a | Single connector, left behind dash panel |
| T2e | 2-pin connector, behind relay plate |
| T3 | 3-pin connector, behind the relay plate |
| T6d | 6-pin connector, behind relay plate |
| T12 | 12-pin connector |
| X | Number plate light |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A20 | Positive (+) connection (15), in dash panel wiring harness |
Wiring Diagram VW TRANSPORTER 1998 - Heater control unit B4W - flame monitor - overheating sensor - coolant temperature sender - heater glow plug
| G64 | Flame monitor |
| G189 | Overheating sensor |
| G241 | Coolant temperature sender, heating* |
| J162 | Heater control unit B4W, in additional heater |
| Q9 | Glow plug for heater |
| T8 | 8-pin connector, near heater additional (diagnosis connector on chamber 5) |
| T14 | 14-pin connector |
| 292 | Earth connection -3-, in aux. heater wiring harness |
| * | Identical to 'G62 - Coolant temperature sender' when performing self-diagnosis |
Wiring Diagram VW TRANSPORTER 1998 - Heater control unit B4W - metering pump - combustion air blower
| A1 | Second battery |
| J162 | Heater control unit B4W, in additional heater |
| S126 | Additional heater fuse, No. 4 multi-fuse adapter |
| T2b | 2-pin connector |
| T2f | 2-pin connector |
| T3 | 3-pin connector, behind relay plate |
| T8 | 8-pin connector, near heater additional |
| T14 | 14-pin connector |
| V6 | Combustion air blower |
| V54 | Metering pump |
| 292 | Earth connection -3-, in aux. heater wiring harness |
Wiring Diagram VW TRANSPORTER 1998 - Additional water heater relay B4W - two-way valve for radiator shut-off - continued coolant circulation pump - two-way valve for coolant circuit - continued coolant circulation thermo-switch
| A1 | Second battery |
| F95 | Thermo-switch for coolant circulation run-on |
| J493 | Additional water heating relay, under driver's seat, control number (403) |
| N214 | Two-way valve for coolant circuit |
| N273 | Radiator shut-off two-way valve |
| T1c | Single connector, behind relay plate |
| T2c | 2-pin connector, left behind dash panel |
| T3 | 3-pin connector, behind relay plate |
| T6 | 6-pin connector |
| T9 | 9-pin connector |
| V51 | Continued coolant circulation pump |
| 18 | Earth point, on cylinder block |
| C41 | Positive connection (30a), in headlight wiring harness |
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