Automotive Electrical Parts: Switches, Cables, Connectors & Fuses

This collection includes everything you need to wire, switch, power, and protect your electrical system. From multi-core cable and relays to rocker switches, inline fuses, terminals, LEDs, and warning lights — ideal for wiring from scratch or upgrading existing looms.

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Smiths Pressure Transducer - Pressure Sender

Smiths Pressure Transducer - Pressure Sender

Genuine Smiths Smiths Oil pressure sender to suit Smiths Classic electrical gauges. Has 1/8NPT thread. This Smiths Classic Pressure sender measures 52mm diameter by 40mm in height (not including the thread or electrical connector).
£82.00
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£82.00
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Engine Oil

CASTROL EDGE 5W-40 Fully Synthetic Engine OilCASTROL EDGE 5W-40 Fully Synthetic Engine Oil
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CASTROL EDGE 5W-40 Fully Synthetic Engine Oil

Advanced full synthetic engine oil for maximum performance and protection. Improves fuel economy and exceeds industry standards.
£13.96
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  • IVA Rocker Switch Side/Head Lights - Car Builder SolutionsIVA Rocker Switch Side/Head Lights - Car Builder Solutions

    IVA Rocker Switch Side/Head Lights

    Fits in a rectangular hole 22mm x 30mm.
    £9.60
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  • Ring Terminal Value Pack for 25mm² Cable 20pcs - Car Builder Solutions

    Ring Terminal Value Pack for 25mm² Cable 20pcs

    Value pack of 20 ring terminals for 25mm² cables. Includes 5 each of 6mm, 8mm, 10mm, and 12mm sizes.
    £10.80
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    £10.80
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  • 25 Amp Thin Wall Cable BUNDLE - Car Builder Solutions25 Amp Thin Wall Cable BUNDLE - Car Builder Solutions
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    25 Amp Thin Wall Cable BUNDLE

    Bundle of all 12 colours.
    £48.00
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    £48.00
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  • All Black Push Button Horn Switch - Car Builder SolutionsAll Black Push Button Horn Switch - Car Builder Solutions

    All Black Push Button Horn Switch

    26mm black push-button horn switch. Durable ABS, non-latching design, fits 22mm hole. Reliable and easy to install.
    £7.20
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    £7.20
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  • Rubber Boot Large Pack Of 3 - Car Builder Solutions

    Rubber Boot Large Pack Of 3

    Durable rubber boots (pack of 3). Cap ID 19mm x 19mm deep, Sleeve ID 9mm, Overall length 48mm.
    £8.16
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    £8.16
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  • 3 Speed Heater Fan Switch With Rubber Knob - Car Builder Solutions3 Speed Heater Fan Switch With Rubber Knob - Car Builder Solutions

    3 Speed Heater Fan Switch With Rubber Knob

    1/4" Spade terminals.
    £10.20
    £0.00
    £10.20
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  • Battery Isolator Cut-Off Switch ***FIA*** Version - Car Builder SolutionsBattery Isolator Cut-Off Switch ***FIA*** Version - Car Builder Solutions

    Battery Isolator Cut-Off Switch ***FIA*** Version

    1000 Amps for 5 seconds. 100 Amps continuous. 10mm ring terminals. 1/4" Spade terminals. One key.
    £24.00
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  • Quick Battery Disconnect Terminal - Car Builder SolutionsQuick Battery Disconnect Terminal - Car Builder Solutions

    Quick Battery Disconnect Terminal

    Quickly disconnect your vehicle's battery with a simple twist of the green knob. Ideal for preventing battery drain and enhancing safety.
    £8.40
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    £8.40
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  • Blade Fuse Selection Pack of 50 - Car Builder SolutionsBlade Fuse Selection Pack of 50 - Car Builder Solutions

    Blade Fuse Selection Pack of 50

    A 50-piece assortment of standard blade fuses in various amperages for automotive and household use. Includes 5A, 10A, 15A, 20A, 25A, and 30A fuses.
    £3.00
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    £3.00
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  • Knurled Ring Toggle Switch Off-On-On 3 Position - Car Builder Solutions

    Knurled Ring Toggle Switch Off-On-On 3 Position

    Fits in a 12mm hole. 10 Amp.
    £14.40
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    £14.40
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  • Push Pull Hazard Switch 24mm Red - Car Builder SolutionsPush Pull Hazard Switch 24mm Red - Car Builder Solutions

    Push Pull Hazard Switch 24mm Red

    Mounts through a 10mm hole.
    £12.00
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    £12.00
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  • Battery Terminal Covers - Car Builder SolutionsBattery Terminal Covers - Car Builder Solutions

    Battery Terminal Covers

    Flexible rubber battery terminal covers in red and black. Prevents corrosion and short circuits. 47 x 36 x 25mm deep.
    £3.60
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    £3.60
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  • 6mm Adhesive Lined Heatshrink Per Metre - Car Builder Solutions6mm Adhesive Lined Heatshrink Per Metre - Car Builder Solutions
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    6mm Adhesive Lined Heatshrink Per Metre

    6mm adhesive lined heat shrink tubing with 3:1 shrink ratio. Creates a weathertight seal for cable protection. Versatile and easy to use.
    £2.04
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    £2.04
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  • Lucas Style Black Paddle Toggle Switch Off On On - Car Builder SolutionsLucas Style Black Paddle Toggle Switch Off On On - Car Builder Solutions

    Lucas Style Black Paddle Toggle Switch Off On On

    Fits in a 14mm hole. 10 Amp.
    £10.80
    £0.00
    £10.80
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  • Black Heavy Duty Relay 40 Amp - Car Builder Solutions
    Out Of Stock

    Black Heavy Duty Relay 40 Amp

    A robust 40A, 12V relay with spade terminals and mounting bracket. Ideal for automotive, marine, and industrial applications.
    £6.00
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    £6.00
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    Out Of Stock
  • Ignition / Start Switch Chrome Bezel 3 Position - Car Builder SolutionsIgnition / Start Switch Chrome Bezel 3 Position - Car Builder Solutions

    Ignition / Start Switch Chrome Bezel 3 Position

    A 3-position ignition switch with chrome bezel, spring return, 1/4" terminals, and 2 keys. Fits a 20mm hole.
    £12.00
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    £12.00
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  • Single Female Terminal For Mini Fuse Module 1mm to 2mm Wire - Car Builder SolutionsSingle Female Terminal For Mini Fuse Module 1mm to 2mm Wire - Car Builder Solutions

    Single Female Terminal For Mini Fuse Module 1mm to 2mm Wire

    Single female terminal for mini fuse modules. Suits 1-2mm wires. Secure and reliable connection for various applications.
    £0.22
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  • Multi Wiring Connectors Value Pack Of 20 - Car Builder Solutions

    Multi Wiring Connectors Value Pack Of 20

    A versatile pack of 20 multi-wiring connectors in 2, 3, 4, and 6-way configurations with male and female components.
    £24.00
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    £24.00
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  • 12mm Adhesive Lined Heatshrink Per Metre - Car Builder Solutions12mm Adhesive Lined Heatshrink Per Metre - Car Builder Solutions
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    12mm Adhesive Lined Heatshrink Per Metre

    12mm adhesive lined heat shrink tubing. 3:1 shrink ratio. Creates a weathertight seal. Sold per metre.
    £2.88
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    £2.88
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  • Ring Terminal 8mm Hole for 50mm² Battery Cable - Car Builder Solutions

    Ring Terminal 8mm Hole for 50mm² Battery Cable

    High-quality 8mm ring terminal for 50mm² battery cables. Tinned copper construction. Solder or crimp. Ensures reliable connection.
    £1.20
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  • Waterproof Multipin Wiring Connector 2 Way - Car Builder SolutionsWaterproof Multipin Wiring Connector 2 Way - Car Builder Solutions

    Waterproof Multipin Wiring Connector 2 Way

    Waterproof 2-way multipin connector with male and female housings, seals, and crimp terminals. Ideal for harsh environments.
    £6.60
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    £6.60
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  • 4 Way Relay Box 130mm - Car Builder Solutions

    4 Way Relay Box 130mm

    Manage up to four standard relays with this 4 Way Relay Box. Includes terminals, a cover, and measures 130mm x 87mm.
    £22.80
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    £22.80
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  • IVA Rocker Switch Fan Green - Car Builder SolutionsIVA Rocker Switch Fan Green - Car Builder Solutions

    IVA Rocker Switch Fan Green

    Fits in a rectangular hole 22mm x 30mm.
    £9.60
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  • Ring Terminal 8mm Hole for 16mm² Battery Cable - Car Builder Solutions

    Ring Terminal 8mm Hole for 16mm² Battery Cable

    High-quality 8mm ring terminal for 16mm² battery cable. Tinned copper, solder or crimp. Reliable connection.
    £0.60
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    £0.60
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  • Midival Fuses (30-150 amp)Midival Fuses (30-150 amp) - Car Builder Solutions
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    Midival Fuses (30-150 amp)

    30mm Midival strip fuses, 30-150 amp, with two M5 mounting holes. Compact size: 42mm x 12mm x 8mm.
    £2.16
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    £2.16
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FAQs

Got a question? We are here to answer

Build and Upgrade Your Vehicle Wiring

From battery cable to relays and terminals, this electrical collection supports DIY installs and complete rewires alike. All parts are quality-checked, vehicle safe, and chosen for flexibility in classic and custom builds.

Featured Products in This Collection

What You’ll Find in This Range

  • Automotive cable: multi-core, battery, and earth
  • Toggle, rocker, and push-button switches
  • Inline fuses, relays, terminals, and connectors
  • LED warning lights, bulb holders, and bezels

Useful Videos

Modular Wiring System Installation Guide

All components are in stock and ready for next day UK delivery — perfect for workshop builds and wiring projects.

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