Wiring Diagram SEAT LEON 2004 - Turn signal bulb - rear left - brake and tail light bulb - left
| F | Brake light switch |
| M6 | Turn signal bulb, rear left |
| M21 | Brake and tail light bulb, left |
| A6 | Positive (+) connection (left turn signal), in dash panel wiring harness |
| B131 | Connection (54), in interior wiring harness |
| W1 | Positive (+) connection -1- (54), in rear wiring harness |
Wiring Diagram SEAT LEON 2004 - Trailer socket
| E1 | Light switch |
| U10 | Trailer socket |
| T5na | 5-pin connector, in left luggage compartment |
| T8i | 8-pin connector, trailer coupling |
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| A88 | Connection (rear fog light), in dash panel wiring harness |
Wiring Diagram SEAT LEON 2004 - Control unit with display in dash panel insert - rear fog light warning lamp - trailer operation warning lamp - left turn signal warning lamp
| J1 | Turn signal relay |
| J285 | Control unit with display in dash panel insert |
| K13 | Rear fog light warning lamp |
| K18 | Trailer operation warning lamp |
| K65 | Left turn signal warning lamp |
| K94 | Right turn signal warning lamp |
| M8 | Turn signal bulb, rear right |
| M22 | Brake and tail light bulb, right |
| S22 | Fuse in fuse box/relay plate |
| S223 | Fuse in fuse box |
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| 86 | Earth connection -1-, in rear wiring harness |
| A5 | Positive (+) connection (right turn signal), in dash panel wiring harness |
| A84 | Connection (58L), in dash panel wiring harness |
| A85 | Connection (58R), in dash panel wiring harness |
Wiring Diagram SEAT LEON 2004 - Luggage compartment light switch - rear fog light cut-out - contact switch - rear fog light bulb - left - rear fog light bulb - right
| F4 | Reversing light switch |
| F5 | Luggage compartment light switch |
| F216 | Rear fog light cut-out, contact switch |
| L46 | Rear fog light bulb, left |
| L47 | Rear fog light bulb, right |
| M16 | Reversing light bulb, left |
| M17 | Reversing light bulb, right |
| M25 | High level brake light bulb |
| W3 | Luggage compartment light |
| X | Number plate light |
| T5j | 5-pin connector, brown, in bootlid |
| T5m | 5-pin connector, in bootlid |
| T5na | 5-pin connector, in left luggage compartment |
| T5nb | 5-pin connector, in left luggage compartment |
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| 98 | Earth connection, in tailgate/boot lid wiring harness |
| A87 | Connection (RL), in dash panel wiring harness |
| W4 | Connection -1- (rear fog light), in rear wiring harness |
| W15 | Connection -1- (luggage compartment light), in rear wiring harness |
| W33 | Connection (reversing light), in tailgate/boot lid wiring harness |
SEAT LEON 2004 Overview of earth points in engine compartment
Overview of earth points in engine compartment | | | 
