Tridon Stop Light Switch TBS057 Normally Closed

The Tridon Stop Light Switch, part number TBS057, is a switch sold as each and identified with a normally closed circuit. That circuit detail is the key point to check when matching the switch to the vehicle application, especially where the brake light system relies on the correct electrical state at rest.

This listing is for a Tridon branded auto electrical switch in the fuses, breakers, relays and switches group. The supplied specifications also note no spanner size and no thread detail, so the part number TBS057 and the vehicle application are the safest references to use when comparing against an existing switch.

A two-year warranty is listed for this part. For brake light switch work, it is worth confirming the replacement against the original part before ordering, because the stated circuit type, normally closed, is a more important match point here than appearance alone.

The available fitment information links this stop light switch to a range of older applications including Eunos 800, Ford Laser, Mazda 323, Mazda 323 Astina, Mazda 323 Protegé, and MG ZS. Use those application names as a guide only, and confirm the exact vehicle details and part number before purchase.

Key Features

• Tridon stop light switch
• Part number TBS057
• Normally closed circuit
• Sold as each
• Two-year warranty

Specifications

• Brand: Tridon
• Part No.: TBS057
• Type: Switch
• Unit of measure: Each
• Circuit: Normally closed
• Spanner: -
• Thread: -
• Warranty: Two years

Fitment guidance

• Eunos 800
• Ford Laser
• Mazda 323
• Mazda 323 Astina
• Mazda 323 Protegé
• MG ZS

Application and Buying Notes

When buying a stop light switch, the main checks are the part number, the circuit type, and the vehicle application. This Tridon unit is listed as TBS057 with a normally closed circuit, so the replacement should be compared against the original switch rather than assumed from the make and model name alone.

The fitment information provided covers several Eunos, Ford, Mazda and MG applications, with sample years including Eunos 800 from 1993 to 1998, Ford Laser from 1994 to 1999, Mazda 323 from 1989 to 1996, and MG ZS from 2001 to 2005. Those ranges are useful as a starting point, but they do not replace a direct check against the vehicle’s build details and the old part.

Because no spanner size or thread specification is listed, it is sensible to inspect the mounting arrangement on the vehicle before ordering. The absence of those details means the safest buying approach is to confirm the original switch shape, connector arrangement, and any identifying marks, then match that information to TBS057.

Brake light switches are small parts, but the wrong circuit type can cause an incorrect electrical result at the pedal. A normally closed switch is not interchangeable with every other stop light switch, so using the supplied part number and application list is the most reliable way to avoid a mismatch.

If the existing switch is still available, check it against this listing before fitting. The listed warranty is two years, but warranty coverage does not replace the need to verify the vehicle application, especially where older Eunos 800, Mazda 323, Ford Laser and MG ZS listings may have more than one brake switch style depending on build and equipment.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number TBS057 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type SWITCH, Unit of Measure EACH, Warranty Two Years, Product Group 1 AUTO ELEC ACCESSORIES, Part No. TBS057, Brand TRIDON, Description Tridon Stop Light Switch, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Tridon Stop Light Switch. Part number TBS057 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number TBS057, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a switch in workshop, fleet, trade, agricultural, or construction service, the listed electrical specification should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994, EUNOS 800 1995, FORD LASER, FORD LASER 1994. Even with application listings, final confirmation should still be based on the exact unit being replaced and the service requirements of the vehicle or machine.

Compatibility note: Confirm fitment by checking the vehicle application and matching the original part number TBS057, along with the normally closed circuit detail, before ordering.

FAQ

What is the part number for this stop light switch?

The listed part number is TBS057. For this listing, part number TBS057 is the main reference point. Published fitment references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994. These details should still be checked against the original unit before ordering.

What circuit type does this switch use?

It is listed as a normally closed circuit switch. For this listing, part number TBS057 is the main reference point. Published fitment references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994. These details should still be checked against the original unit before ordering.

What vehicles are shown in the fitment information?

The fitment information includes Eunos 800, Ford Laser, Mazda 323, Mazda 323 Astina, Mazda 323 Protegé, and MG ZS. For this listing, part number TBS057 is the main reference point. Published fitment references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994. These details should still be checked against the original unit before ordering.

Are the mounting thread and spanner details provided?

No. The specifications list both spanner and thread as dash entries, so those details are not provided here. For this listing, part number TBS057 is the main reference point. Published fitment references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994. These details should still be checked against the original unit before ordering.

What warranty is listed for this part?

A two-year warranty is listed. For this listing, part number TBS057 is the main reference point. Published fitment references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994. These details should still be checked against the original unit before ordering.

How should I confirm compatibility before buying?

Check the original switch against part number TBS057, confirm the vehicle application, and make sure the circuit type is normally closed before ordering. For this listing, part number TBS057 is the main reference point. Published fitment references include EUNOS 800, EUNOS 800 1993, EUNOS 800 1994. These details should still be checked against the original unit before ordering.