Wiring Diagram SEAT LEON 2002 - Convenience system central control unit - bonnet contact switch - anti-theft alarm system horn
| E2 | Turn signal switch |
| F266 | Bonnet contact switch |
| H8 | Anti-theft alarm system horn |
| J285 | Control unit with display in dash panel insert |
| J393 | Convenience system central control unit |
| R47 | Central locking and anti-theft alarm system |
| T12 | 12-pin connector, turn signals |
| T15 | 15-pin connector, behind the centre console |
| T16 | 16-pin connector, self-diagnosis |
| T23 | 23-pin connector, blue, on dash panel insert |
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| 176 | Earth connection, in right headlight wiring harness |
| 179 | Earth connection, in left headlight wiring harness |
| 223 | Earth connection, in anti-theft alarm system wiring harness |
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| A5 | Positive (+) connection (right turn signal), in dash panel wiring harness |
| A6 | Positive (+) connection (left turn signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| * | Only models with maintenance intermittent extension |
| ** | Only models with immobilizer |
Wiring Diagram SEAT LEON 2002 - Comfort system central control unit - interior surveillance deactivation switch - interior surveillance system switch illumination
| E267 | Interior surveillance deactivation switch, strut B |
| J393 | Comfort system central control unit |
| L118 | Interior surveillance system switch illumination |
| W | Front interior illumination |
| W13 | Front passenger`s reading lamp |
| W19 | Reading lamp, driver's side |
| T4y | 4-way connector |
| T15 | 15-way connector, central console, behind |
| T23 | 23-way connector, under the steering wheel |
| A29 | Connection (interior light), instrument panel wiring harness |
| A144 | Connection (interior surveillance), instrument panel wiring harness |
| B129 | Connection (interior light, 31L), interior wiring harness |
| R6 | Positive connection -1-, interior light wiring harness |
| * | Only vehicles with twin-horn |
Wiring Diagram SEAT LEON 2002 - Comfort system central control unit - interior surveillance sensor - reading lamp - rear left - reading lamp - rear right
| G273 | Interior surveillance sensor |
| G274 | Interior surveillance transmitter |
| J393 | Comfort system central control unit |
| W11 | Reading lamp, rear left |
| W12 | Reading lamp, rear right |
| T4z | 4-way connector |
| T6v | 6-way connector |
| T15 | 15-way connector, central console, behind |
| 128 | Earth connection -1-, interior lighting wiring harness |
| B129 | Connection (interior light, 31L), interior wiring harness |
| R33 | Positive connection -3-, interior light wiring harness |
Wiring Diagram SEAT LEON 2002 - Comfort system central control unit
| D | Ignition and starter switch |
| J393 | Comfort system central control unit |
| S12 | Fuse in fuse holder/relay plate |
| S111 | Anti-theft alarm system and immobilizer fuse |
| S144 | Anti-theft alarm system central locking fuse |
| T15 | 15-way connector, central console, behind |
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| 81 | Earth connection -1-, instrument panel wiring harness |
| 128 | Earth connection -1-, interior lighting wiring harness |
| 135 | Earth connection -2-, instrument panel wiring harness |
| 501 | Bolted joint -2- (30), on the relay plate |
| A32 | Positive connection (30), instrument panel wiring harness |
| B111 | Positive connection -1- (30a), interior wiring harness |
SEAT LEON 2002 Overview of earth points in engine compartment
Overview of earth points in engine compartment | | | 
