Instrument cluster cable colours & connections
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TR7 instrument cluster connections and cable colours

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Ignition - black/blue (fat)

Right indicator - purple/red

Left indicator   - black/blue (thin)

High beam       - Blue/orange

Oil                  - red/blue

Brakes             - blue/green

Choke              - red/orange

Low fuel           - Black/red

Rear fog           - black/green

Tacho sensor     - blue

Speedo sensor   - brown

Fuel sensor       - green

+ve always on   - yellow

+ve ignition       - red

Illumination       - white

Chassis/earth     - black

Instrument cluster cable colours