Tridon HD13 Flasher Unit 12V 3 Pin

The Tridon HD13 is a 12V electro-mechanical flasher unit with 3 pins, intended for flasher and hazard light applications. It is supplied as a single unit and carries part number HD13, with OEM number 81980-12020 listed for reference.

Its load rating is 1 to 6 x 25W and the flash rate is not influenced by load variation. The operating voltage range is 11 to 15 volts D.C., which is a useful checkpoint when matching the unit to an existing 12V circuit.

This flasher is part of Tridon’s auto electrical range and sits in the fuses, breakers, relays and switches group. A retail blister pack version is also available as HD13PAC, but the unit listed here is the standard each-pack item.

For buyers replacing a failed indicator or hazard flasher, the main identifiers to confirm are the 12V rating, 3-pin layout, and HD13 part number. Those three details are usually the fastest way to narrow the correct replacement before comparing the vehicle application.

Key Features

• HD12 electro-mechanical flasher
• 12V unit
• 3-pin configuration
• Load rating: 1 to 6 x 25W
• Suitable for flasher and hazard light applications
• Flash rate not influenced by load variation

Specifications

• Brand: Tridon
• Part No.: HD13
• OEM Number: 81980-12020
• Type: Flasher unit
• Voltage: 12V
• Number of pins: 3
• Unit of measure: Each
• Warranty: One year

Vehicle application guidance

• Applications are listed across multiple makes including Alfa Romeo, Austin, Austin-Healey, Bedford, Bertone, Citroën, Fiat, Ford, Hillman, Holden, Honda, Jaguar, Lada, Leyland-Innocenti, Mazda, MG, Mitsubishi, Morris, Saab, Toyota, Triumph and Volvo.
• Examples shown include Austin Mini, Bedford CF, Bertone X-1/9, Citroën CX, Fiat 125/128/130/132/500, Ford Anglia/Cortina, Holden Gemini/Jackaroo/E Series/F Series/G Series, Honda N360 Scamp/N600, Jaguar E-Type/MK II/MK X/S-Type/XK, Lada Niva, Mazda 1500 SS/616/808/Capella/R100/RX-2/RX-3, MG MGB/MGB GT, Mitsubishi Colt/Express/L200 Express, Toyota Corolla/Corona/Crown/Hiace/Hilux, Triumph TR 3A/TR 4A/TR 5/TR 6/TR 7, and Volvo 140/P 122 S Amazon.
• Some applications are shown with year references, including a number of 1980 to 1996 listings depending on make and model.
• Fitment detail is application-dependent, so the safest match is by HD13, 12V, and the 3-pin layout against the vehicle’s original flasher arrangement.

Application and Buying Notes

Before ordering, compare the HD13 part number with the unit already fitted to the vehicle. The 12V rating and 3-pin design are essential here, because a flasher with a different pin count or voltage range will not be a direct replacement even if it looks similar.

If you are replacing a failed flasher, inspect the plug style, terminal count, and any markings on the existing part before purchase. The operating voltage range of 11 to 15 volts D.C. should also be checked against the vehicle’s electrical system, particularly where a battery, charging, or wiring issue may be present.

The listed OEM number 81980-12020 can be used as another comparison point when matching against an original part or a cross-reference catalogue. It is still worth confirming the physical fit and wiring arrangement, because compatibility depends on the vehicle application as well as the electrical specification.

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 HD13 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 FLASHER UNIT, Unit of Measure EACH, Warranty One Year, Number of Pins 3, Product Group 2 FUSES BREAKERS RELAYS SWITCHES, Part No. HD13, Brand TRIDON, Description Tridon Flasher 12V 3 Pin, Voltage 12.

Additional published details for cross-checking include OEM Number 81980-12020, Product Group 1 AUTO ELEC ACCESSORIES.

Tridon Flasher 12V 3 Pin. Part number HD13 should be checked first. Listed voltage is 12. These details form the core reference points used by parts interpreters when confirming the correct replacement.

For part number HD13, 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 flasher unit in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Available application references include ALFA ROMEO 1750-2000, ALFA ROMEO ALFASUD, ALFA ROMEO ALFASUD 1980, ALFA ROMEO ALFASUD 1981, AUSTIN A40, AUSTIN MINI. 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 One Year. 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 HD13 part number, 12V operating requirement, 3-pin configuration, and the vehicle application details before ordering.

FAQ

What type of part is the Tridon HD13?

It is a flasher unit, specifically an HD12 electro-mechanical flasher designed for 12V circuits.

How many pins does this flasher unit have?

It has 3 pins.

What voltage is the HD13 designed for?

The unit is rated at 12V, with an operating voltage range of 11 to 15 volts D.C.

What is the load rating?

The load rating is 1 to 6 x 25W.

Is it suitable for indicator and hazard light use?

Yes. It is stated as suitable for flasher and hazard light applications.

What identifiers should I check before buying?

Check the HD13 part number, the OEM number 81980-12020, the 12V rating, and the 3-pin layout against the existing part and vehicle application.