Tridon Stop Light Switch TBS023 M12 X 1 Normally Closed

The Tridon Stop Light Switch, part number TBS023, is a switch type unit sold each. It uses an M12 x 1 thread, a 17 mm spanner size, and a normally closed circuit, so it is important to compare the thread and circuit arrangement against the original switch before ordering.

This switch sits in the auto electrical accessories range and is listed under fuses, breakers, relays and switches. For buyers working on older BMW and Volvo applications, the key check points are the part number TBS023, the M12 x 1 thread, and the normally closed circuit specification.

The unit carries a two year warranty and is branded Tridon. Those details are useful when you are cross-checking a replacement stop light switch for the correct physical fit and electrical function, especially where the original switch has worn threads, unreliable pedal input, or intermittent brake light operation.

Key Features

• Tridon stop light switch
• Part number: TBS023
• M12 x 1 thread
• 17 mm spanner size
• Normally closed circuit
• Sold each

Specifications

• Brand: Tridon
• Product type: Switch
• Description: Tridon Stop Light Switch
• Part No.: TBS023
• Unit of measure: Each
• Thread: M12 x 1
• Spanner size: 17 mm
• Circuit: Normally closed

Listed fitment applications

• BMW 3
• BMW 3 1975
• BMW 3 1976
• BMW 3 1977
• BMW 3 1978
• BMW 3 1979
• BMW 3 1982
• BMW 3 1983

Application and Buying Notes

Before ordering, check the original switch against the Tridon TBS023 using the thread size, the 17 mm spanner size, and the circuit type. The listed M12 x 1 thread and normally closed circuit are the most important physical and electrical match points for this part.

Fitment listings include BMW 3 models from 1975 through 1987 and Volvo 240 applications from 1979 through 1990, with additional grouped applications shown for BMW 5, BMW 6, BMW 7, Volvo 260, Volvo 265, Volvo 740, Volvo 760, Volvo 850, Volvo 940 and Volvo 960. Use those applications as a guide, but still verify the switch fitted to the vehicle.

Stop light switches are simple in appearance but specific in operation. A normally closed circuit must match the vehicle’s brake light circuit design, and the thread must suit the mounting point. If either detail differs, the switch may not install correctly or may not operate as intended.

If you are replacing a failed brake light switch, compare the old unit’s part number where possible. The TBS023 reference is the clearest identifier here, along with the M12 x 1 thread and 17 mm spanner size. These details are more reliable than a broad vehicle model match on its own.

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 TBS023 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. TBS023, Brand TRIDON, Description Tridon Stop Light Switch, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Tridon Stop Light Switch. Part number TBS023 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number TBS023, 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 BMW 3, BMW 3 1975, BMW 3 1976, BMW 3 1977, VOLVO 240, VOLVO 240 1979. 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.

The listed warranty is Two Years. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.

Compatibility note: Confirm fitment by matching the part number TBS023, the M12 x 1 thread, the 17 mm spanner size, and the normally closed circuit against the existing switch and vehicle application before purchase.

FAQ

What is the part number for this Tridon stop light switch?

The part number is TBS023. For this listing, part number TBS023 is the main reference point. Published fitment references include BMW 3, BMW 3 1975, BMW 3 1976. These details should still be checked against the original unit before ordering.

What thread does the switch use?

It uses an M12 x 1 thread. For this listing, part number TBS023 is the main reference point. Published fitment references include BMW 3, BMW 3 1975, BMW 3 1976. These details should still be checked against the original unit before ordering.

What type of circuit does this stop light switch have?

It is listed as normally closed. For this listing, part number TBS023 is the main reference point. Published fitment references include BMW 3, BMW 3 1975, BMW 3 1976. These details should still be checked against the original unit before ordering.

What is the spanner size for installation?

The listed spanner size is 17 mm. For this listing, part number TBS023 is the main reference point. Published fitment references include BMW 3, BMW 3 1975, BMW 3 1976. These details should still be checked against the original unit before ordering.

Which vehicles are listed in the fitment data?

Listed applications include BMW 3 models from 1975 to 1987, Volvo 240 models from 1979 to 1990, and grouped applications for BMW 5, BMW 6, BMW 7, Volvo 260, Volvo 265, Volvo 740, Volvo 760, Volvo 850, Volvo 940 and Volvo 960. For this listing, part number TBS023 is the main reference point. Published fitment references include BMW 3, BMW 3 1975, BMW 3 1976. These details should still be checked against the original unit before ordering.

What should I check before buying?

Match the part number TBS023, the M12 x 1 thread, the 17 mm spanner size and the normally closed circuit to the existing switch and vehicle application before ordering. For this listing, part number TBS023 is the main reference point. Published fitment references include BMW 3, BMW 3 1975, BMW 3 1976. These details should still be checked against the original unit before ordering.