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CourseRestoration & Classics Applications open

Restoration of Vintage Horns and Klaxons Course

Online 300-hour course in restoring vintage horns and klaxons. 6 modules covering UNECE Regulation No. 28 (audible warning devices), Directive 70/388/EEC (audible warning devices) and Audacity (sound analysis). Dedicated tutor and open enrolment.

Duration300 h
ModeOnline
LanguageEnglish
Start datesSet by the faculty
AwardSEIUM Institute certificate
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Learning outcomes

What you will be able to do

01

Classify vintage horns and klaxons by operating principle.

02

Diagnose electrical and mechanical faults in audible warning devices.

03

Dismantle and restore the diaphragm and vibrator mechanism.

04

Recover original finishes while respecting authenticity.

05

Restore air horns and their compressors.

06

Install the warning device with appropriate electrical protection.

07

Verify compliance with the regulations on audible warning devices.

Profile

Who it's for

  • Restorer of classic automotive accessories who wants to specialise in the restoration of vintage horns and klaxons.
  • Classic car electrician who wants to specialise in the restoration of vintage horns and klaxons.
  • Component restoration technician who wants to specialise in the restoration of vintage horns and klaxons.
  • Accessory authenticity specialist who wants to specialise in the restoration of vintage horns and klaxons.
  • Classic vehicle restorer who wants to specialise in the restoration of vintage horns and klaxons.
  • Historic vehicle inspection technician who wants to specialise in the restoration of vintage horns and klaxons.
  • Graduates in engineering or sciences seeking to join classic vehicle restoration workshops.
Standards & tools

What you'll work with

  • UNECE Regulation No. 28 (audible warning devices)
  • Directive 70/388/EEC (audible warning devices)
  • Royal Decree 2822/1998 (General Vehicle Regulation)
  • Royal Decree 1428/2003 (General Traffic Regulation)
  • ISO 6722-1 (cables for road vehicles)
  • ISO 8820 (fuses)
  • FIVA Turin Charter
Syllabus

6 modules · 300 h

  1. 1.1Evolution: bulb, trumpet and electromagnetic
  2. 1.2Compressed-air horns
  3. 1.3Common models and brands
  4. 1.4Identifying an original part
  5. 1.5Value and rarity
  6. 1.6Acoustic signalling regulations
  7. 1.7Required sound level
  8. 1.8Documentation and catalogues
  9. 1.9Tools and test bench
  10. 1.10Workshop: identification and assessment of a horn
  1. 2.1Electromagnetic horn: principle
  2. 2.2Diaphragm, contacts and adjustment screw
  3. 2.3Resonator and its geometry
  4. 2.4Electrical consumption and relay
  5. 2.5Diagnosing absence of sound
  6. 2.6Hoarse or weak sound
  7. 2.7Earth and power supply checks
  8. 2.8Current consumption measurement
  9. 2.9Switch and its wear
  10. 2.10Practical: diagnosis of three horns
  1. 3.1Opening without damaging the housing
  2. 3.2Cleaning contacts and coil
  3. 3.3Rewinding when necessary
  4. 3.4Diaphragm: repair or replacement
  5. 3.5Adjusting the air gap
  6. 3.6Adjustment screw and its calibration
  7. 3.7Resonators and trumpets: repair
  8. 3.8Fasteners and brackets
  9. 3.9Assembly and sealing
  10. 3.10Practical: complete restoration of a horn
  1. 4.1Original paints and finishes
  2. 4.2Nickel-plating and chrome-plating of parts
  3. 4.3Lettering, logos and their reproduction
  4. 4.4Grilles and trim
  5. 4.5Preserving manufacturer's marks
  6. 4.6Balancing appearance and function
  7. 4.7Market reproductions and their quality
  8. 4.8Reversibility of the intervention
  9. 4.9Documentation of the work
  10. 4.10Practical: finishing a restored part
  1. 5.1Vintage electric compressor
  2. 5.2Reservoir, valves and ducts
  3. 5.3Trumpets and their tuning
  4. 5.4Compressor maintenance
  5. 5.5Locating leaks
  6. 5.6Mounting and routing
  7. 5.7Consumption and electrical protection
  8. 5.8Spurious noise and vibration
  9. 5.9Air circuit safety
  10. 5.10Practical: inspection of an air horn assembly
  1. 6.1Electrical circuit and relay
  2. 6.2Controls: steering wheel, pedal and lever
  3. 6.3Appropriate cable cross-sections
  4. 6.4Protection against humidity
  5. 6.5Adjusting the sound level
  6. 6.6Roadworthiness inspection and requirements
  7. 6.7Preserving removed original parts
  8. 6.8Common workshop errors
  9. 6.9Documented real cases
  10. 6.10Final project: documented restoration of a horn system
Methodology, software & labs

How you'll learn

100% online training on the SEIUM campus, with downloadable material, recorded classes and a dedicated technical tutor. There are no fixed timetables: students progress at their own pace within the enrolment period, which makes it possible to combine the course with work.

Each module combines theory, guided reading of the original standard and applied exercises. The working software is Audacity (sound analysis), Room EQ Wizard (acoustic measurement), PicoScope (electrical diagnosis), Fusion 360 (part reproduction), in free, academic or evaluation versions. Tests are studied using real procedures for measuring horn sound levels, electrical test benches for klaxons, and verification of air horn compressors. Assessment is continuous by module, plus the final integrative project.

Accredited laboratories(EN ISO/IEC 17025) with rotor test bench, EMC/Lightning pre-compliance, HIL/SIL, vibration/acoustics.
Evidence-oriented Master's Thesis:safety case, test plan, compliance dossier and operational limits.
Industry mentoring:lecturers with experience in training, , eVTOL/UAM and flight test.
Flexible format(hybrid/online), international cohorts and support from SEIUM Career Services.
Ethics and safety:a safety-by-design approach, with cyber-OT, DIH and compliance as its pillars.
Capstone project

Build it end to end

Your final project follows the real engineering workflow, step by step, reviewed by your tutor.

Electrical circuit and relay

Classify vintage horns and klaxons by operating principle.

Controls: steering wheel, pedal and lever

Diagnose electrical and mechanical faults in audible warning devices.

Appropriate cable cross-sections

Dismantle and restore the diaphragm and vibrator mechanism.

Protection against humidity

Recover original finishes while respecting authenticity.

Adjusting the sound level

Restore air horns and their compressors.

Career opportunities

Where this takes you

Restorer of classic automotive accessoriesClassic car electricianComponent restoration technicianAccessory authenticity specialistClassic vehicle restorerHistoric vehicle inspection technician
Admissions & scholarships

Requirements

  • No prior qualification is required.
  • Internet connection and a computer capable of running the programme's software.
  • Sufficient Spanish to follow technical regulatory texts.

Ready to start?

Send your application today. Our admissions team replies within 72 hours with your study plan and funding options.

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FAQ

Frequently asked questions

The programme comprises 300 hours in total, spread over 3 to 5 months. That is an average of 10 to 15 hours per week, compatible with a full-time job.

The course uses Audacity (sound analysis), Room EQ Wizard (acoustic measurement), PicoScope (electrical diagnosis) and Fusion 360 (part reproduction). Free, academic or evaluation versions are used, and the tutor indicates the free alternative where one exists.

An own diploma from SEIUM upon passing the continuous assessment and the integrative project. This is in-house training, not an official qualification from the Ministry.

Yes. Modules passed in a course or postgraduate diploma in the same area can be credited towards the advanced programme. Please check the credit transfer policy when you enrol.

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