{"product_id":"a9573129-tridon-stop-light-switch","title":"Tridon Stop Light Switch TBS121 Normally Open","description":"\u003cp\u003eThe Tridon Stop Light Switch, part number TBS121, is a vehicle electrical switch supplied as each and listed with a normally open circuit. It sits in the auto electrical accessories group and is also classified under fuses, breakers, relays and switches, which makes it a straightforward replacement item when the existing brake light switch needs to be matched by part number and application.\u003c\/p\u003e\n\u003cp\u003eThis switch is catalogued under Tridon and identified simply as a switch type product. The listed features are limited and specific: no spanner size is provided, no thread detail is provided, and the circuit is normally open. That means the key buying checks are the part number TBS121 and the vehicle application rather than assuming any physical or connector details that are not stated here.\u003c\/p\u003e\n\u003cp\u003eFor buyers comparing options, the most useful details are the Tridon brand, the stop light switch description, and the two-year warranty. Those facts make it easier to line up a direct replacement search, but they do not replace a careful check against the vehicle’s original switch specification, especially where brake light circuit operation and mounting style must match exactly.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTridon stop light switch\u003c\/li\u003e\n\u003cli\u003ePart number: TBS121\u003c\/li\u003e\n\u003cli\u003eCircuit: normally open\u003c\/li\u003e\n\u003cli\u003eSupplied as each\u003c\/li\u003e\n\u003cli\u003eTwo-year warranty\u003c\/li\u003e\n\u003cli\u003eNo spanner size listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Tridon\u003c\/li\u003e\n\u003cli\u003eProduct type: Switch\u003c\/li\u003e\n\u003cli\u003eDescription: Tridon Stop Light Switch\u003c\/li\u003e\n\u003cli\u003ePart No.: TBS121\u003c\/li\u003e\n\u003cli\u003eUnit of measure: Each\u003c\/li\u003e\n\u003cli\u003eWarranty: Two Years\u003c\/li\u003e\n\u003cli\u003eProduct group 1: Auto Elec Accessories\u003c\/li\u003e\n\u003cli\u003eProduct group 2: Fuses Breakers Relays Switches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment guidance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eListed applications include Mercedes-Benz passenger vehicles.\u003c\/li\u003e\n\u003cli\u003eFitment references shown include Mercedes-Benz C-Class.\u003c\/li\u003e\n\u003cli\u003eFitment references shown include Mercedes-Benz CLC-Class.\u003c\/li\u003e\n\u003cli\u003eFitment references shown include Mercedes-Benz CLK.\u003c\/li\u003e\n\u003cli\u003eFitment references shown include Mercedes-Benz SLK.\u003c\/li\u003e\n\u003cli\u003eModel-year references shown in the data include Mercedes-Benz C-Class 2002 through 2012.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication and Buying Notes\u003c\/h3\u003e\n\u003cp\u003eWhen replacing a stop light switch, the part number and circuit operation matter just as much as the vehicle badge. This Tridon unit is TBS121 and is described as a normally open switch, so the safest approach is to compare those details against the original switch fitted to the vehicle before ordering. The listing does not provide a spanner size or thread specification, so those physical details should not be assumed.\u003c\/p\u003e\n\u003cp\u003eThe fitment information supplied points to Mercedes-Benz applications, including C-Class, CLC-Class, CLK and SLK references, with C-Class model-year entries shown from 2002 through 2012. That is useful for narrowing the search, but it is still important to verify the exact vehicle variant, year and original switch specification against the vehicle already fitted.\u003c\/p\u003e\n\u003cp\u003eBecause this is an electrical switch, a mismatch can affect brake light operation. Confirm the replacement style, mounting arrangement and circuit type on the existing part rather than relying on the model name alone. If the original switch is marked differently, or if the vehicle uses a different switch arrangement, the correct replacement may not be this TBS121 part.\u003c\/p\u003e\n\u003cp\u003eThe two-year warranty gives a clear service period on the listed item, but warranty support does not confirm vehicle suitability. Treat the warranty as a product assurance detail and the fitment references as a guide only. The final check should always be the original part number, the vehicle application and the switch configuration already in the car.\u003c\/p\u003e\n\u003cp\u003eIf you are matching the part for a workshop job or a parts counter order, it helps to have the removed switch in hand. Compare the old unit’s markings, circuit behaviour and physical layout with this Tridon TBS121 switch before fitting. That is the most reliable way to avoid returning the wrong stop light switch for a Mercedes-Benz application.\u003c\/p\u003e\n\u003cp\u003eBefore 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.\u003c\/p\u003e\n\u003cp\u003eFor workshop, fleet, and equipment applications, accurate identification of part number TBS121 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.\u003c\/p\u003e\n\u003cp\u003eRelevant published details for this unit include Type SWITCH, Unit of Measure EACH, Warranty Two Years, Product Group 1 AUTO ELEC ACCESSORIES, Part No. TBS121, Brand TRIDON, Description Tridon Stop Light Switch, Product Group 2 FUSES BREAKERS RELAYS SWITCHES.\u003c\/p\u003e\n\u003cp\u003eTridon Stop Light Switch. Part number TBS121 should be checked first. These details form the core reference points used by parts interpreters when confirming the correct replacement.\u003c\/p\u003e\n\u003cp\u003eFor part number TBS121, 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.\u003c\/p\u003e\n\u003cp\u003eFor 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.\u003c\/p\u003e\n\u003cp\u003eAvailable application references include MERCEDES-BENZ C-CLASS, MERCEDES-BENZ C-CLASS 2002, MERCEDES-BENZ C-CLASS 2003, MERCEDES-BENZ C-CLASS 2004. 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.\u003c\/p\u003e\n\u003cp\u003eThe listed warranty is Two Years. Warranty terms should be considered alongside correct application and part identification, as warranty does not replace fitment confirmation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Please confirm fitment by checking the Tridon part number TBS121, the normally open circuit detail, and the vehicle application against the original stop light switch before purchase.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eWhat is the part number for this stop light switch?\u003c\/h4\u003e\n\u003cp\u003eThe part number listed is TBS121.\u003c\/p\u003e\n\u003ch4\u003eWhat circuit type does this switch have?\u003c\/h4\u003e\n\u003cp\u003eIt is listed as a normally open circuit switch.\u003c\/p\u003e\n\u003ch4\u003eWhich brand is this stop light switch?\u003c\/h4\u003e\n\u003cp\u003eThe brand is Tridon.\u003c\/p\u003e\n\u003ch4\u003eWhat vehicles are referenced in the fitment information?\u003c\/h4\u003e\n\u003cp\u003eThe supplied fitment references include Mercedes-Benz C-Class, CLC-Class, CLK and SLK applications, with C-Class model-year references shown from 2002 to 2012.\u003c\/p\u003e\n\u003ch4\u003eIs a spanner size or thread specification provided?\u003c\/h4\u003e\n\u003cp\u003eNo. The listed features show spanner: - and thread: -, so those details are not provided.\u003c\/p\u003e\n\u003ch4\u003eWhat warranty is listed for this switch?\u003c\/h4\u003e\n\u003cp\u003eThe listed warranty is two years.\u003c\/p\u003e","brand":"TRIDON","offers":[{"title":"Default Title","offer_id":56889160892576,"sku":"A9573129","price":132.6,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0275\/5058\/0875\/files\/jzTnNTHymDICH-ws55hOKg_5455b418-baa6-4ff4-9086-1212d8eecdd0.jpg?v=1775127786","url":"https:\/\/www.micksgonebush.com.au\/products\/a9573129-tridon-stop-light-switch","provider":"Micks Gone Bush","version":"1.0","type":"link"}