# Electrical and Electronics Installers and Repairers, Transportation Equipment > Install, adjust, or maintain mobile electronics communication equipment, including sound, sonar, security, navigation, and surveillance systems on trains, watercraft, or other mobile equipment. - Code: 49-2093.00 (O*NET-SOC; SOC 2018 49-2093) - Family: [Installation, Maintenance & Repair](https://foundation.org.ai/occupations#family-49), one of its 52 occupations - Tasks: 15 tasks (10 core and 5 supplemental) - Page: https://foundation.org.ai/occupations/49-2093.00 - JSON: https://foundation.org.ai/data/tasks/49-2093.00.json ## What the work is made of 1. Inspect and test electrical systems and equipment to locate and diagnose malfunctions, using visual inspections, testing devices, and computer software. Core task · Task 11727 · Rated by 52 people who do the job, August 2019 2. Reassemble and test equipment after repairs. Core task · Task 11728 · Rated by 52 people who do the job, August 2019 3. Adjust, repair, or replace defective wiring and relays in ignition, lighting, air-conditioning, and safety control systems, using electrician's tools. Core task · Task 11732 · Rated by 51 people who do the job, August 2019 4. Splice wires with knives or cutting pliers, and solder connections to fixtures, outlets, and equipment. Core task · Task 11729 · Rated by 52 people who do the job, August 2019 5. Locate and remove or repair circuit defects such as blown fuses or malfunctioning transistors. Core task · Task 11731 · Rated by 51 people who do the job, August 2019 6. Maintain equipment service records. Core task · Task 11734 · Rated by 52 people who do the job, August 2019 7. Refer to schematics and manufacturers' specifications that show connections and provide instructions on how to locate problems. Core task · Task 11733 · Rated by 52 people who do the job, August 2019 8. Install fixtures, outlets, terminal boards, switches, and wall boxes, using hand tools. Core task · Task 11738 · Rated by 51 people who do the job, August 2019 9. Install new fuses, electrical cables, or power sources as required. Core task · Task 11730 · Rated by 52 people who do the job, August 2019 10. Cut openings and drill holes for fixtures, outlet boxes, and fuse holders, using electric drills and routers. Core task · Task 11735 · Rated by 51 people who do the job, August 2019 11. Confer with customers to determine the nature of malfunctions. Supplemental task · Task 11740 · Rated by 51 people who do the job, August 2019 12. Install electrical equipment such as air-conditioning, heating, or ignition systems and components such as generator brushes and commutators, using hand tools. Supplemental task · Task 11737 · Rated by 51 people who do the job, August 2019 13. Repair or rebuild equipment such as starters, generators, distributors, or door controls, using electrician's tools. Supplemental task · Task 11739 · Rated by 51 people who do the job, August 2019 14. Estimate costs of repairs based on parts and labor requirements. Supplemental task · Task 11741 · Rated by 51 people who do the job, August 2019 15. Measure, cut, and install frameworks and conduit to support and connect wiring, control panels, and junction boxes, using hand tools. Supplemental task · Task 11736 · Rated by 51 people who do the job, August 2019 ## More in Installation, Maintenance & Repair - [Aircraft Mechanics and Service Technicians](https://foundation.org.ai/occupations/49-3011.00): 38 tasks - [Audiovisual Equipment Installers and Repairers](https://foundation.org.ai/occupations/49-2097.00): 11 tasks - [Automotive Body and Related Repairers](https://foundation.org.ai/occupations/49-3021.00): 25 tasks - [Automotive Glass Installers and Repairers](https://foundation.org.ai/occupations/49-3022.00): 18 tasks - [Automotive Service Technicians and Mechanics](https://foundation.org.ai/occupations/49-3023.00): 30 tasks - [Avionics Technicians](https://foundation.org.ai/occupations/49-2091.00): 13 tasks - [Bicycle Repairers](https://foundation.org.ai/occupations/49-3091.00): 14 tasks - [Bus and Truck Mechanics and Diesel Engine Specialists](https://foundation.org.ai/occupations/49-3031.00): 26 tasks - [Camera and Photographic Equipment Repairers](https://foundation.org.ai/occupations/49-9061.00): 15 tasks - 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