Vauxhall Signum Brake Light Switch Replacement Parts

Yes, the Vauxhall Signum has a brake light switch — it is a standard component on all variants, fitted at the top of the brake pedal assembly to signal when the brakes are applied. This applies across all engine sizes and trim levels, so every Signum on the road will have one. If you are looking for a used unit, any Vauxhall dismantler handling Signum stock should be able to supply one.

The Vauxhall Signum was produced from 2003 to 2008 as a single generation on the GM Z-platform, sharing its underpinnings with the Vectra C throughout that run. In principle, the brake light switch design did not change significantly across this production span, but because a 2003 and a 2006 car sit either side of any minor running changes Vauxhall may have introduced, you should confirm the part number against your registration with the breaker before buying. Never assume fitment without that check.

For a brake light switch, engine size makes no difference — the switch operates at the pedal box and is not related to the braking hardware differences that sometimes come with larger or more powerful engines. Whether your Signum runs the 1.8 petrol, 2.0 Turbo, 2.2, 3.2 V6, or any of the diesel variants, the pedal-mounted switch is the same part. Confirm the exact part number with the breaker against your registration just to be safe.

Trim level — whether Elegance, Design, or Cosmo — has no bearing on the brake light switch, as it is a mechanical component at the pedal and entirely unaffected by interior or exterior specification differences between trims. You may find cosmetic differences between donor cars when visiting a breaker's yard, but the switch itself will be identical. Confirm against your registration with the breaker as a routine check, but trim is not a concern here.

The Vauxhall Signum shares its platform and many mechanical components with the Vectra C (2002–2008), and the brake pedal assembly is closely related between the two cars. In practice, many breakers and owners report the brake light switch to be the same part, but because cross-model fitment involves variables that are best verified against part numbers, you should confirm compatibility with the breaker using both registrations before purchasing. This is a straightforward check that any experienced Vauxhall dismantler can do quickly.

The Vauxhall Signum was discontinued in 2008, meaning the model ran from 2003 to 2008 with no successor. Used brake light switches are a relatively common find at breakers because the part is shared across a reasonable number of surviving Signum and related Vectra C donor vehicles. Search on a marketplace like Findapart to get quotes from UK dismantlers, and always provide your full registration so the breaker can match the correct part number.