Tridon Stop Light Switch TBS034 M16 X 1.5 Normally Closed

The Tridon Stop Light Switch, part number TBS034, is a vehicle electrical switch sold as each and supplied with a two year warranty. It is listed as a normally closed circuit switch with an M16 x 1.5 thread, so the thread size and circuit style are the first details to check before ordering.

As a stop light switch, this part sits in the auto electrical controls range and is grouped under fuses, breakers, relays and switches. That makes it important to confirm both the electrical function and the physical fitment points, especially where the vehicle uses a threaded switch body rather than a plug-in style unit.

The key identifying details for this item are the Tridon brand, TBS034 part number, M16 x 1.5 thread and normally closed circuit. Those are the practical checkpoints a parts interpreter would use when matching the switch to the vehicle application.

Fitment information is listed against Renault and Volvo applications, including Renault 21, Renault Laguna, Volvo S40 and Volvo V40 references. Even so, the safest way to buy is to compare the part number and the switch specifications against the existing unit in the vehicle before fitting.

Key Features

• Tridon stop light switch
• Part number: TBS034
• Thread: M16 x 1.5
• Circuit: Normally closed
• Sold individually
• Two year warranty

Specifications

• Brand: Tridon
• Product type: Switch
• Unit of measure: Each
• Part No.: TBS034
• Thread: M16 x 1.5
• Circuit: Normally closed
• Warranty: Two years
• Product groups: Auto elec accessories; fuses breakers relays switches

Listed fitment references

• Renault 21
• Renault Laguna
• Volvo S40
• Volvo V40
• Renault 21 model years shown in the fitment data include 1988 to 1991
• Renault Laguna model years shown in the fitment data include 1993 to 1998
• Volvo S40 model years shown in the fitment data include 1995 to 2003
• Volvo V40 model years shown in the fitment data include 1995

Application and Buying Notes

Before ordering, check the part number TBS034 against the switch already fitted to the vehicle and confirm the thread is M16 x 1.5. That combination is the clearest identifier here, because a stop light switch can look similar to other threaded electrical switches while still being the wrong circuit type.

The circuit is listed as normally closed, so matching the electrical action matters as much as matching the thread. If the existing switch uses a different switching state, the brake lamp circuit may not behave as intended, so it is worth confirming the original unit before installation.

The fitment references point to Renault 21, Renault Laguna, Volvo S40 and Volvo V40 applications, with specific year ranges shown in the application data. Use those references as a guide only, then verify the vehicle details, the switch thread and the connector arrangement on the car itself before buying.

This is an individual switch supplied each, which is useful if you are replacing one failed component rather than a complete assembly. The two year warranty applies to the item as listed, but correct identification and installation still depend on matching the part number and physical specification to the vehicle.

If the old switch is missing, damaged or unreadable, measure the threaded section and compare it with the M16 x 1.5 listing rather than relying on appearance alone. For electrical parts like this, the safest approach is to verify the brake light switch function, the thread size and the vehicle application together.

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 TBS034 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. TBS034, Brand TRIDON, Description Tridon Stop Light Switch, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.

Tridon Stop Light Switch. Part number TBS034 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number TBS034, 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 RENAULT 21, RENAULT 21 1988, RENAULT 21 1989, RENAULT 21 1990, VOLVO S40, VOLVO S40 1995. 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 compatibility by checking the TBS034 part number, the M16 x 1.5 thread and the normally closed circuit against the vehicle application before purchase.

FAQ

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

The part number is TBS034. For this listing, part number TBS034 is the main reference point. Published fitment references include RENAULT 21, RENAULT 21 1988, RENAULT 21 1989. These details should still be checked against the original unit before ordering.

What thread size does this switch use?

It uses an M16 x 1.5 thread. For this listing, part number TBS034 is the main reference point. Published fitment references include RENAULT 21, RENAULT 21 1988, RENAULT 21 1989. These details should still be checked against the original unit before ordering.

Is the circuit normally open or normally closed?

It is listed as normally closed. For this listing, part number TBS034 is the main reference point. Published fitment references include RENAULT 21, RENAULT 21 1988, RENAULT 21 1989. These details should still be checked against the original unit before ordering.

Which vehicles are referenced for fitment?

The fitment references include Renault 21, Renault Laguna, Volvo S40 and Volvo V40 applications. For this listing, part number TBS034 is the main reference point. Published fitment references include RENAULT 21, RENAULT 21 1988, RENAULT 21 1989. These details should still be checked against the original unit before ordering.

Is this item sold as a set or individually?

It is sold individually, with unit of measure listed as each. For this listing, part number TBS034 is the main reference point. Published fitment references include RENAULT 21, RENAULT 21 1988, RENAULT 21 1989. These details should still be checked against the original unit before ordering.

What warranty is listed for this switch?

The listed warranty is two years. For this listing, part number TBS034 is the main reference point. Published fitment references include RENAULT 21, RENAULT 21 1988, RENAULT 21 1989. These details should still be checked against the original unit before ordering.