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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Latest Products

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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Smiths Water Temperature Sender Unit

Smiths Water Temperature Sender Unit

Genuine Smith
£21.00
£0.00
£21.00
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Smiths Analogue Time Clock Black / Magnolia FaceSmiths Analogue Time Clock Black / Magnolia Face
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Smiths Analogue Time Clock Black / Magnolia Face

Add authentic Smiths heritage to your classic car with this elegant 52mm magnolia dial time clock (12V).
£107.00
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£107.00
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Smiths Classic Mechanical 52mm Oil Pressure Gauge 1/2 Round Chrome Bezel - Magnolia FaceSmiths Classic Mechanical 52mm Oil Pressure Gauge 1/2 Round Chrome Bezel - Magnolia Face

Smiths Classic Mechanical 52mm Oil Pressure Gauge 1/2 Round Chrome Bezel - Magnolia Face

Authentic Smiths Classic 52mm mechanical oil gauge with iconic magnolia dial, 70psi range, and chrome bezel for vintage dashboards.
£94.00
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£94.00
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Smiths Classic Mechanical 52mm Oil Pressure Gauge 1/2 Round Chrome Bezel - Black FaceSmiths Classic Mechanical 52mm Oil Pressure Gauge 1/2 Round Chrome Bezel - Black Face

Smiths Classic Mechanical 52mm Oil Pressure Gauge 1/2 Round Chrome Bezel - Black Face

Monitor engine vitals accurately with this authentic Smiths Classic 52mm mechanical oil pressure gauge featuring a 70psi range.
£94.00
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£94.00
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Smiths Classic 80mm Digital Tachometer – 1/2 Round Chrome Bezel - Black FaceSmiths Classic 80mm Digital Tachometer – 1/2 Round Chrome Bezel - Black Face

Smiths Classic 80mm Digital Tachometer – 1/2 Round Chrome Bezel - Black Face

Authentic Smiths classic style meets modern digital accuracy. This 80mm, 7,000 RPM tachometer features a chrome bezel and suits 4/6/8 cylinder engines.
£194.00
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£194.00
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Smiths Classic 80mm Tachometer - 1/2 Round Chrome Bezel - Magnolia FaceSmiths Classic 80mm Tachometer - 1/2 Round Chrome Bezel - Magnolia Face

Smiths Classic 80mm Tachometer - 1/2 Round Chrome Bezel - Magnolia Face

Experience timeless British style with the Smiths Classic 80mm Tachometer. Features adjustable settings, chrome bezel, and modern electronic accuracy for 12V systems.
£204.00
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£204.00
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Smiths Classic 52mm Electronic Tachometer - 1/2 Round Chrome Bezel - Magnolia FaceSmiths Classic 52mm Electronic Tachometer - 1/2 Round Chrome Bezel - Magnolia Face

Smiths Classic 52mm Electronic Tachometer - 1/2 Round Chrome Bezel - Magnolia Face

Classic Smiths 52mm electronic tachometer blends vintage looks with modern, adjustable accuracy for 4, 6, or 8-cylinder engines.
£177.00
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£177.00
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Smiths Classic 52mm Digital Tachometer – 1/2 Round Chrome Bezel - Black FaceSmiths Classic 52mm Digital Tachometer – 1/2 Round Chrome Bezel - Black Face

Smiths Classic 52mm Digital Tachometer – 1/2 Round Chrome Bezel - Black Face

Smiths Classic 52mm tachometer blends vintage style with modern digital accuracy. Features 8K RPM range, adjustable cylinders, and chrome bezel.
£177.00
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£177.00
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SMITHS Motorsport Telemetrix Water Temperature Gauge - 52mmSMITHS Motorsport Telemetrix Water Temperature Gauge - 52mm

SMITHS Motorsport Telemetrix Water Temperature Gauge - 52mm

Monitor your classic car's engine temp with this Smiths Telemetrix 52mm gauge. Features chrome bezel, 40-120°C scale, 12V compatibility.
£52.00
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£52.00
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Smiths Telemetrix Voltmeter – 52mm - Cirrus white dialSmiths Telemetrix Voltmeter – 52mm - Cirrus white dial

Smiths Telemetrix Voltmeter – 52mm - Cirrus white dial

Monitor your classic car's 12V system with this Smiths Telemetrix 52mm Voltmeter, featuring a timeless design with a chrome bezel.
£55.00
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£55.00
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Smiths Water Temperature Sender UnitSmiths Water Temperature Sender Unit

Smiths Water Temperature Sender Unit

Genuine Smith water temperature sender unit featuring a 1/8" NPT male thread, compatible with Telemetrix, Flight, and International gauges.
£16.92
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£16.92
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Smiths Telemetrix Oil Temperature Gauge – 52mmSmiths Telemetrix Oil Temperature Gauge – 52mm

Smiths Telemetrix Oil Temperature Gauge – 52mm

Accurately monitor engine oil temperature with this classic Smiths Telemetrix 52mm gauge, featuring a timeless chrome bezel for vintage dashboards.
£52.00
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£52.00
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Smiths Telemetrix Oil Pressure Gauge – 52mm - Cirrus white dialSmiths Telemetrix Oil Pressure Gauge – 52mm - Cirrus white dial

Smiths Telemetrix Oil Pressure Gauge – 52mm - Cirrus white dial

Monitor engine health with the classic Smiths Telemetrix 52mm Oil Pressure Gauge (0-100psi), featuring a stylish polished chrome bezel.
£52.00
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£52.00
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Smiths Telemetrix Fuel Gauge – 52mm - 12V - Cirrus white dialSmiths Telemetrix Fuel Gauge – 52mm - 12V - Cirrus white dial

Smiths Telemetrix Fuel Gauge – 52mm - 12V - Cirrus white dial

Monitor fuel accurately with this classic Smiths Telemetrix 52mm gauge. Features a chrome bezel, black dial, and 12V compatibility.
£52.00
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£52.00
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Smiths Telemetrix Motorsport Ammeter -30 to +30 AmpsSmiths Telemetrix Motorsport Ammeter -30 to +30 Amps

Smiths Telemetrix Motorsport Ammeter -30 to +30 Amps

Monitor your classic car's 12V electrical system with this classic Smiths Telemetrix 52mm ammeter (-30/+30A), ensuring period-correct looks and reliability.
£62.00
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£62.00
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Smiths Telemetrix Motorsport Time Clock – 52mm - Cirrus white dialSmiths Telemetrix Motorsport Time Clock – 52mm - Cirrus white dial

Smiths Telemetrix Motorsport Time Clock – 52mm - Cirrus white dial

Precise 52mm Smiths Telemetrix quartz time clock for motorsport. Features 12V operation, clear display, and durable black bezel.
£107.00
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£107.00
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Smiths Classic Magnolia Digital 80mm Speedometer – 1/2 Round Chrome Bezel - 12VSmiths Classic Magnolia Digital 80mm Speedometer – 1/2 Round Chrome Bezel - 12V

Smiths Classic Magnolia Digital 80mm Speedometer – 1/2 Round Chrome Bezel - 12V

Authentic Smiths 80mm speedometer blends classic design with modern GPS accuracy. Features chrome bezel, LED backlight, and easy 12V installation.
£237.00
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£237.00
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Smiths Classic Black Digital 80mm Speedometer – 1/2 Round Chrome Bezel - 12VSmiths Classic Black Digital 80mm Speedometer – 1/2 Round Chrome Bezel - 12V

Smiths Classic Black Digital 80mm Speedometer – 1/2 Round Chrome Bezel - 12V

Get classic Smiths style with modern GPS accuracy in this 80mm speedometer. Features easy 12V install, backlight, and chrome bezel.
£237.00
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£237.00
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Smiths Classic Digital Speedometer – Magnolia Face - Chrome BezelSmiths Classic Digital Speedometer – Magnolia Face - Chrome Bezel

Smiths Classic Digital Speedometer – Magnolia Face - Chrome Bezel

Smiths Classic Digital 80mm Speedometer delivers precision speed readings with timeless appeal. Featuring a classic black dial, white numerals, and a polished chrome bezel.
£237.00
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£237.00
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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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£13.96
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MOBIL Mobil 1 0W-20 Advanced Full Synthetic Engine OilMOBIL Mobil 1 0W-20 Advanced Full Synthetic Engine Oil
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MOBIL Mobil 1 0W-20 Advanced Full Synthetic Engine Oil

Advanced full synthetic 0W20 motor oil. Optimised for fuel economy and long-lasting engine protection in hybrid vehicles.
£13.96
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£13.96
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CASTROL EDGE 0W-30 A5/B5 Engine OilCASTROL EDGE 0W-30 A5/B5 Engine Oil
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CASTROL EDGE 0W-30 A5/B5 Engine Oil

Advanced 0W-30 motor oil boosts engine performance and fuel economy. Trusted by experts for ultimate protection and efficiency.
£13.96
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£13.96
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MOBIL Super 2000 X1 10W-40 Engine OilMOBIL Super 2000 X1 10W-40 Engine Oil
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MOBIL Super 2000 X1 10W-40 Engine Oil

High-performance 10W40 motor oil offering superior engine protection, sludge prevention, and cleanliness. Meets various industry standards.
£7.96
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£7.96
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CASTROL TRANSMAX LS LL 75W-140 Fully Synthetic Gear Oil - 1L

CASTROL TRANSMAX LS LL 75W-140 Fully Synthetic Gear Oil - 1L

High-performance 75W-140 gear oil for limited slip differentials. Reduces noise and vibration, approved for top vehicle brands.
£27.95
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£27.95
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CASTROL Transmax Manual FE 75W Gear Oil - 1L

CASTROL Transmax Manual FE 75W Gear Oil - 1L

High-performance 75W gear oil offering fuel economy, wear protection, and smooth shifting. Suitable for Ford, Volvo, and MB vehicles.
£19.96
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£19.96
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CASTROL Transmax ATF DX III MV Automatic Transmission Fluid - 1L

CASTROL Transmax ATF DX III MV Automatic Transmission Fluid - 1L

High-performance automatic transmission fluid. Wide compatibility, smooth shifting, and extended component life. 1L bottle.
£12.95
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£12.95
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CASTROL Transmax ATF Z Automatic Transmission Fluid - 1L

CASTROL Transmax ATF Z Automatic Transmission Fluid - 1L

High-performance ATF fluid for smooth shifting, enhanced wear protection, and extended drain intervals. Suitable for a wide range of vehicles.
£18.95
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£18.95
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  • 16.5a Thin Wall Cable Per Metre - Car Builder Solutions16.5a Thin Wall Cable Per Metre - Car Builder Solutions

    16.5a Thin Wall Cable Per Metre - Black

    Modern, high specification, high temperature thin wall low voltage cables suitable for use in the automotive, marine and allied industries.  These cables are specified as standard by many manufacturers throughout Europe due to their high performance characteristics. Low voltage cables are: Suitable for 12v and...
    £0.38
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  • 25 Amp Thin Wall Cable By The Metre - Car Builder Solutions25 Amp Thin Wall Cable By The Metre - Car Builder Solutions

    25 Amp Thin Wall Cable By The Metre - Black

    Sold by the Metre IF YOU WANT 5 METRES, ORDER 'QUANTITY 5'
    £0.60
    £0.00
    £0.60
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  • 11 Amp Thin Wall Cable By The Metre - Car Builder Solutions11 Amp Thin Wall Cable By The Metre - Car Builder Solutions
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    11 Amp Thin Wall Cable By The Metre - Black

    Sold by the Metre IF YOU WANT 5 METRES, SELECT 'BY THE METRE' & ORDER 'QUANTITY 5'
    £0.30
    £0.00
    £0.30
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  • Black Standard Relay 40 Amp 4 Pin - Car Builder SolutionsBlack Standard Relay 40 Amp 4 Pin

    Black Standard Relay 40 Amp 4 Pin

    A 40-amp, 4-pin standard relay ideal for switching automotive components like fans, horns, and lamps. Features a removable mounting bracket.
    £4.80
    £0.00
    £4.80
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  • Pre Insulated Blue Female Spade 1/4". Pack of 50

    Pre Insulated Blue Female Spade 1/4". Pack of 50

    Pack of 50. Secure and reliable blue female spade crimp terminals. Compatible with 6.5mm (1/4") male spades and 1.5 to 2.5mm² copper wire.
    £3.60
    £0.00
    £3.60
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  • Split Sleeving Cable Protection 8.5mm I.D. Per Metre - Car Builder Solutions
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    Split Sleeving Cable Protection 8.5mm I.D. Per Metre

    SOLD BY THE METRE
    £1.50
    £0.00
    £1.50
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  • Lucas Style Connector Bullet Terminal Pack Of 25 - Car Builder Solutions

    Lucas Style Connector Bullet Terminal Pack Of 25

    High-quality brass bullet terminals, ideal for automotive wiring and other applications needing a secure crimp connection. Pack of 25.
    £4.80
    £0.00
    £4.80
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  • Split Sleeving Cable Protection 12mm I.D. Per Metre - Car Builder Solutions
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    Split Sleeving Cable Protection 12.5mm I.D. Per Metre

    SOLD BY THE METRE
    £1.80
    £0.00
    £1.80
    (-0%)
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  • 170 amp 25mm² Battery Cable Red Per Metre - Car Builder Solutions170 amp 25mm² Battery Cable Red Per Metre - Car Builder Solutions
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    170 amp 25mm² Battery Cable Red Per Metre

    SOLD BY THE METRE
    £7.20
    £0.00
    £7.20
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  • Heavy Duty Chrome Toggle Switch On-Off - Car Builder SolutionsHeavy Duty Chrome Toggle Switch On-Off - Car Builder Solutions

    Heavy Duty Chrome Toggle Switch On-Off

    Robust chrome toggle switch. 25A, 12V. Classic Bakelite body. Fits 12mm hole. Ideal for various applications.
    £4.80
    £0.00
    £4.80
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  • Black Single Relay Holder - Car Builder Solutions

    Black Single Relay Holder

    Versatile single relay holder with 5 female spade terminals, compact size, and easy mounting. Ideal for various electrical systems.
    £3.60
    £0.00
    £3.60
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  • Battery Isolator Cut-Off Switch Standard Version - Car Builder SolutionsBattery Isolator Cut-Off Switch Standard Version - Car Builder Solutions

    Battery Isolator Cut-Off Switch Standard Version

    Robust battery isolator cut-off switch. 1000A for 5s, 100A continuous. Two keys, 10mm terminals, easy installation.
    £9.00
    £0.00
    £9.00
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  • 170 amp 25mm² Battery Cable Black Per Metre - Car Builder Solutions170 amp 25mm² Battery Cable Black Per Metre - Car Builder Solutions
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    170 amp 25mm² Battery Cable Black Per Metre

    SOLD BY THE METRE
    £7.20
    £0.00
    £7.20
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  • Lucas Style Single Connector/Joiner Pack of 10 - Car Builder Solutions

    Lucas Style Single Connector/Joiner Pack of 10

    Reliable push-in bullet connectors with durable hard rubber sleeves. Accepts 4.8mm brass solder terminals. Pack of 10.
    £3.00
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    £3.00
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  • IVA Rocker Switch Terminals Pack of 5 - Car Builder SolutionsIVA Rocker Switch Terminals Pack of 5 - Car Builder Solutions

    IVA Rocker Switch Terminals Pack of 5

    Secure and reliable 3mm bullet terminals for IVA rocker switches. Pack of 5 ensures optimal conductivity.
    £2.40
    £0.00
    £2.40
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  • Lucas Style Double Connector/Joiner Pack Of 10 - Car Builder Solutions

    Lucas Style Double Connector/Joiner Pack Of 10

    Pack of 10 double connectors/joiners. Secure and reliable push-in design. Durable hard rubber sleeve. Accepts 4.8mm brass solder terminals.
    £3.60
    £0.00
    £3.60
    (-0%)
  • 16.5 Amp Thin Wall Cable BUNDLE - Car Builder Solutions16.5 Amp Thin Wall Cable BUNDLE - Car Builder Solutions
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    16.5 Amp Thin Wall Cable BUNDLE

    Bundle of all 12 plain coloured cables.
    £31.20
    £0.00
    £31.20
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  • 6.5mm Female Terminal For Micro Relay Module - Car Builder Solutions6.5mm Female Terminal For Micro Relay Module - Car Builder Solutions

    6.5mm Female Terminal For Micro Relay Module

    6.5mm female terminal connector for Micro Relay Modules #MRLYCO & #MRLYNO. Ensures secure connections for automotive relays.
    £0.54
    £0.00
    £0.54
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  • Ring Terminal 8mm Hole for 25mm² Battery Cable - Car Builder Solutions

    Ring Terminal 8mm Hole for 25mm² Battery Cable

    Tinned copper 8mm ring terminal for 25mm² battery cables. Solder or crimp connection, ensures reliable electrical contact.
    £0.60
    £0.00
    £0.60
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  • Pre Insulated Red Female Spade 1/4". Pack of 50

    Pre Insulated Red Female Spade 1/4". Pack of 50

    Pack of 50. Red female spade crimp terminals. Secure, insulated connections for 6.5mm (1/4") male spades and 0.5-1.5mm² copper wire.
    £3.60
    £0.00
    £3.60
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  • High Power 5 Volt Twin USB Charger Socket Black - Car Builder SolutionsHigh Power 5 Volt Twin USB Charger Socket Black - Car Builder Solutions

    High Power 5v Twin USB Charger Socket Black

    5v 1 Amp and 5v 2.1 Amp outputs.
    £17.40
    £0.00
    £17.40
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  • Black Change-Over Relay 30 Amp 5 Pin - Car Builder SolutionsBlack Change-Over Relay 30 Amp 5 Pin - Car Builder Solutions

    Black Change-Over Relay 30 Amp 5 Pin

    A reliable 30 Amp 5 pin change-over relay with a removable mounting bracket for easy installation.
    £6.00
    £0.00
    £6.00
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  • Ring Terminal 10mm Hole for 25mm² Battery Cable - Car Builder Solutions

    Ring Terminal 10mm Hole for 25mm² Battery Cable

    Heavy-duty ring terminal for 25mm² battery cables. 10mm hole, tinned copper, solder or crimp.
    £0.90
    £0.00
    £0.90
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  • 2 Speed Rotary Wiper Switch - Car Builder Solutions2 Speed Rotary Wiper Switch - Car Builder Solutions

    2 Speed Rotary Wiper Switch

    Your wiper motor must have two-speed winding and park facility for this switch to work correctly.
    £21.60
    £0.00
    £21.60
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  • CBS 12 Circuit Wiring Module - Car Builder SolutionsCBS 12 Circuit Wiring Module - Car Builder Solutions

    CBS 12 Circuit Wiring Module

    Mounting plate dimensions: 145mm (5¼") x 145mm (5 ¾") Height 75mm (3").
    £118.80
    £0.00
    £118.80
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