Brake lights, reverse light and fog lights, trailer control unit (BMW 3 Series E46)

Brake lights, reversing light and fog lights, trailer control unit.


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Wire colors

• Bl — Blue
• Br — Brown
• Ge — Yellow
• Gr — Gray
• Gn — Green
• Vi — Violet
• Ws — White
• Or — Orange
• Rt — Red
• Sw — Black

Designations on the diagram

• 1 Battery
• 8 Ignition switch
• 18 Engine management system relay
• 37 Lighting control unit
• 57 Left brake light
• 58 Right brake light
• 65 Brake light switch
• 66 High Brake Light
• 67 Reverse lamp relay
• 68 Left reverse pump
• 69 Right reverse pump
• 70 Reverse light switch
• 71 Front Fog Light Relay
• 78 Left front fog light
• 73 Right front fog lamp
• 74 Trailer electrical equipment control unit