Electrical System
Assembly12 V system with engine, body, and brake control units on a CAN bus. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Electrical System parts and their functions
21 top-level parts · 7,968 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Electronic Control Unit 4 parts | 20× | body, doors, airbag, EPS, ABS, climate, lighting and more |
| 2 | 12 V Battery | 1× | 12 V lead-acid or lithium battery that powers the vehicle's low-voltage electronics and starts or wakes the main system. |
| 3 | LV Wiring Harness 4 parts | 1× | Low-voltage wiring harness distributing 12 V power and signals to lights, sensors, switches, and control units. |
| 4 | Alternator 4 parts | 1× | Belt-driven generator that charges the battery and powers the electrical system while the engine runs. |
| 5 | Starter Motor 4 parts | 1× | Geared electric motor that spins the engine to start it when the key is turned. |
| 6 | Infotainment Head Unit 5 parts | 1× | Dashboard head unit with display, processor, radio, and connectivity that runs navigation, media, and phone functions. |
| 7 | Insulated Wire (cut length) | 1600× | about 1,600 circuits |
| 8 | Crimp Terminal | 3200× | two per wire |
| 9 | Connector | 260× | Mating plug-and-socket pair that joins two lengths of wiring or a cable to a board so a circuit can be assembled, serviced, and separated without soldering. |
| 10 | Blade Fuse | 60× | Mini or standard blade fuse in the fuse box protecting one circuit. |
| 11 | Ground Strap | 8× | Braided or welded cable bonding engine, body and battery negative. |
| 12 | Battery Cable | 2× | Heavy cable from the battery to the starter and fuse box. |
| 13 | Horn | 2× | Electric disc horn behind the grille. |
| 14 | Parking Sensor | 8× | Ultrasonic sensor in the bumper. |
| 15 | Reversing Camera | 1× | Small camera module in the tailgate handle. |
| 16 | Body Sensor | 14× | Rain and light sensor, door and hood switches, seat occupancy sensor, ambient temperature sensor. |
| 17 | Remote Key | 2× | Radio key with immobiliser transponder. |
| 18 | Antenna | 1× | Roof or glass antenna for radio, GPS and keyless entry. |
| 19 | USB Port | 2× | Charging and data port in the console. |
| 20 | Cable Tie & Harness Clip | 520× | harness routing |
| 21 | Body Plug & Grommet | 20× | harness grommets |
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Bill of materials for Electrical System
21 top-level lines · 56 rows shown · 7,968 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Electronic Control Unit 4 parts | ecu | 20× | 20 | 93 | assembly |
| 1.1 | Bare PCB | pcb-bare | 1× | 20 | · | part |
| 1.2 | Microcontroller | mcu | 1× | 20 | · | part |
| 1.3 | CAN Transceiver | can-transceiver | 1× | 20 | · | part |
| 1.4 | SMD Passive (R/C/L) | smd-passives | 90× | 1,800 | · | part |
| 2 | 12 V Battery | lv-battery | 1× | 1 | · | part |
| 3 | LV Wiring Harness 4 parts | lv-harness | 1× | 1 | 54 | assembly |
| 3.1 | Wire Bundle | wire-bundle | 1× | 1 | · | part |
| 3.2 | Connector | connector | 40× | 40 | · | part |
| 3.3 | Fuse Box | fuse-box | 1× | 1 | · | part |
| 3.4 | Relay | relay | 12× | 12 | · | part |
| 4 | Alternator 4 parts | hatchback-car-alternator | 1× | 1 | 25 | assembly |
| 4.1 | Stator Assembly 3 parts | stator-assembly | 1× | 1 | 3 | assembly |
| 4.1.1 | Stator Core (laminations) | stator-core | 1× | 1 | · | part |
| 4.1.2 | Copper Winding | copper-winding | 1× | 1 | · | part |
| 4.1.3 | Slot Insulation | stator-insulation | 1× | 1 | · | part |
| 4.2 | Rotor Assembly 4 parts | rotor-assembly | 1× | 1 | 19 | assembly |
| 4.2.1 | Rotor Shaft | rotor-shaft | 1× | 1 | · | part |
| 4.2.2 | Rotor Core | rotor-core | 1× | 1 | · | part |
| 4.2.3 | Neodymium Magnet | neodymium-magnet | 16× | 16 | · | part |
| 4.2.4 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 4.3 | Rectifier Bridge | hatchback-car-rectifier | 1× | 1 | · | part |
| 4.4 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 5 | Starter Motor 4 parts | hatchback-car-starter | 1× | 1 | 24 | assembly |
| 5.1 | Stator Assembly 3 parts | stator-assembly | 1× | 1 | 3 | assembly |
| 5.1.1 | Stator Core (laminations) | stator-core | 1× | 1 | · | part |
| 5.1.2 | Copper Winding | copper-winding | 1× | 1 | · | part |
| 5.1.3 | Slot Insulation | stator-insulation | 1× | 1 | · | part |
| 5.2 | Rotor Assembly 4 parts | rotor-assembly | 1× | 1 | 19 | assembly |
| 5.2.1 | Rotor Shaft | rotor-shaft | 1× | 1 | · | part |
| 5.2.2 | Rotor Core | rotor-core | 1× | 1 | · | part |
| 5.2.3 | Neodymium Magnet | neodymium-magnet | 16× | 16 | · | part |
| 5.2.4 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 5.3 | Starter Solenoid | hatchback-car-solenoid | 1× | 1 | · | part |
| 5.4 | Pinion Drive | hatchback-car-pinion-drive | 1× | 1 | · | part |
| 6 | Infotainment Head Unit 5 parts | infotainment-unit | 1× | 1 | 304 | assembly |
| 6.1 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 6.2 | Compute SoC Module | soc-module | 1× | 1 | · | part |
| 6.3 | LCD Panel | lcd-panel | 1× | 1 | · | part |
| 6.4 | Touch Digitizer | touch-digitizer | 1× | 1 | · | part |
| 6.5 | SMD Passive (R/C/L) | smd-passives | 300× | 300 | · | part |
| 7 | Insulated Wire (cut length) | hatchback-car-wire | 1600× | 1,600 | · | part |
| 8 | Crimp Terminal | hatchback-car-crimp-terminal | 3200× | 3,200 | · | part |
| 9 | Connector | connector | 260× | 260 | · | part |
| 10 | Blade Fuse | hatchback-car-fuse | 60× | 60 | · | part |
| 11 | Ground Strap | hatchback-car-ground-strap | 8× | 8 | · | part |
| 12 | Battery Cable | hatchback-car-battery-cable | 2× | 2 | · | part |
| 13 | Horn | hatchback-car-horn | 2× | 2 | · | part |
| 14 | Parking Sensor | hatchback-car-parking-sensor | 8× | 8 | · | part |
| 15 | Reversing Camera | hatchback-car-reversing-camera | 1× | 1 | · | part |
| 16 | Body Sensor | hatchback-car-body-sensor | 14× | 14 | · | part |
| 17 | Remote Key | hatchback-car-key-fob | 2× | 2 | · | part |
| 18 | Antenna | hatchback-car-antenna | 1× | 1 | · | part |
| 19 | USB Port | hatchback-car-usb-port | 2× | 2 | · | part |
| 20 | Cable Tie & Harness Clip | hatchback-car-cable-tie | 520× | 520 | · | part |
| 21 | Body Plug & Grommet | hatchback-car-body-plug | 20× | 20 | · | part |
Where the electrical system is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Foxconn
foxconn.com ↗
|
Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |