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About

Capability

Wiring Looms

At our Bolton facility, we manufacture wiring harnesses and looms to IPC/WHMA-A-620. Every loom is produced by experienced, fully trained operators.

Multi-branch wiring loom in black sleeving with yellow marker sleeves on a steel workbench, ending in olive-drab circular connectors with blue identification bands: one open socket with lettered contacts, one open plug with gold pins and one closed with a dust cap, with a loose dust cap on a braided lanyard in front and a production hall with teal steelwork and cable reels behind

Defence Wiring Loom Manufacturer

Assembly Solutions Ltd (ASL) is a leading UK manufacturer of custom Wiring Looms and Wiring Harnesses for defence applications. Based in Bolton, we are an award-winning family business, fully accredited to ISO 9001 and ISO 45001.

We manufacture from compact wiring sub-assemblies to large, complex vehicle harnesses. Our experienced team handles demanding electrical requirements, with operators trained to IPC A-620 standards. Every loom is built to customer drawings and specifications, controlling cable lengths, connectors, terminations and protective processes.

Our Defence Wiring Loom Services

We manufacture a wide range of custom-made wiring looms and harnesses for defence applications, including armoured vehicles, specialist vehicles and high-reliability electrical equipment.

Every completed wiring loom undergoes a detailed Quality Inspection and 100% electrical test to confirm accuracy and compliance with the customer specification before packing and despatch.

  • Close-up on an olive-green military vehicle: a red LED light unit with two circular connectors, their black cables in convoluted tubing with marker sleeves
  • An ASL engineer checking a cable assembly drawing on screen: two connector leads with their wiring, pin-outs and an ASL title block
  • Multi-branch wiring loom in black sleeving with yellow marker sleeves on a steel workbench, ending in olive-drab circular connectors with blue identification bands: one open socket with lettered contacts, one open plug with gold pins and one closed with a dust cap, with a loose dust cap on a braided lanyard in front and a production hall with teal steelwork and cable reels behind
  • Five members of the ASL team at an IPC/WHMA-A-620 training session around a meeting table, with course workbooks open and a screen showing a slide on sleeving and boot positions, under the Assembly Solutions sign
  • Five olive-drab circular connectors with blue identification bands on black cable assemblies with white marker sleeves, four closed with dust caps on braided lanyards and one open to show its gold pins
  • An ASL operator in glasses building a wiring loom on a pegged harness board, with parts bins on the shelves behind
  • Stainless steel control enclosure with a sealed operator panel: a green display, soft-key buttons, a numeric keypad, arrow keys and green start and red stop buttons, above a hinged compartment with a handle and a yellow "No water spray" warning label
  • An ASL engineer at a two-screen workstation beneath the Assembly Solutions sign, preparing step-by-step cable assembly instructions beside an assembly drawing with an ASL title block
  • Open stainless steel enclosure wired with a row of DIN-rail I/O modules, white and black cables in spiral wrap, terminal blocks and a circuit board, with an electronics module, circular connectors and a smaller stainless enclosure fitted to the inside of the door
  • An ASL operator fitting the dust cap to an olive-drab circular connector with an RJ45 data insert, beside coils of shielded data cable with more connectors
  • Black submarine running on the surface through dark blue open sea, seen from above, with its fin, masts and hydroplanes and white water breaking along the hull
  • Black cable assembly coiled on a slate-blue background: a right-angle housing with a brass circular connector at one end, ribbed strain-relief boots, and a square-flanged circular connector with a blue multi-pin insert at the other
  • Tracked armoured vehicle in olive camouflage driving across a dusty training ground, throwing up dirt and dust, with pine forest and blue sky behind
  • Close-up of an olive-drab circular connector with a blue identification band and socket contacts lettered A to F, a lanyard tab for its dust cap and a black moulded boot on the cable behind
  • Compact black quadcopter drone in flight against a dark navy sky, with folding arms, spinning propellers, small navigation lights and a camera gimbal slung beneath the body
  • Stainless steel enclosure with two rows of labelled push-in ports, S1 to S16, exhaust and air-in fittings, SYS CAN and ENG CAN connectors, red-capped GPS and GSM antenna connectors and a speaker grille, with two black cables leaving through grey cable glands
  • Olive-drab target acquisition unit with a large lens and smaller sensor windows on a tripod mount with angle scales, its black cable joined by an olive-drab circular connector with a blue identification band and a capped connector hanging on a lanyard, against a dark navy background
  • Olive-drab circular connector closed with its knurled dust cap on a braided lanyard, with a blue identification band and a black moulded boot on the cable behind
  • Four-wheeled armoured patrol vehicle in olive green with camouflage netting along its side, a winch frame on the front and roof-mounted equipment, driving across a dusty track under a blue sky
  • Open stainless steel enclosure wired with terminal blocks and colour-coded cores, its gasketed lid beside it with an earth lead attached, and a black cable harness with circular connectors coiled behind

30 Years of Wiring Loom Experience

ASL has more than 30 years of UK manufacturing experience, dating back to 1995. During this time, we have developed extensive knowledge of complex wiring products, including large vehicle looms and high-reliability electrical assemblies, supporting projects from prototype through to production.

Trusted UK Manufacturer

ASL is a trusted UK manufacturer of wiring looms, wiring harnesses and cable assemblies. Our Bolton facility combines skilled operators, dedicated harness build areas, long wiring boards, engineering support and in-house electrical testing to provide a flexible service for technically demanding projects.

Our Wiring Loom Capabilities

We offer a comprehensive range of wiring loom and harness manufacturing capabilities, including:

  • CAD Drawing & Engineering Support
  • Dedicated Wiring Harness Build Boards up to 10m
  • Cable Cut, Strip & Terminate
  • Crimping, Soldering & Tinning
  • Protective Sleeving, Heat-Shrink & Wire Identification
  • 100% Electrical Testing & Quality Inspection

Why Choose ASL?

We combine engineering support, manufacturing experience and rigorous quality control to deliver dependable wiring loom and harness solutions for defence applications. Key reasons to work with us include:

  • 30+ years of manufacturing experience
  • Specialist wiring loom and harness manufacturing
  • UK-based manufacturing
  • 100% electrical testing
  • ISO accredited
  • IPC A-620-trained workforce
  • Engineering, CAD and prototype support
  • Prototype through to volume production
  • Fast, flexible lead times and personal service

Experience & credentials

  • 30 years

    Established in 1995

  • 100 staff

    A Bolton-based family business

  • ISO 9001:2015

    Quality management, certified for the manufacture of wire harnesses

  • ISO 45001:2018

    Occupational health and safety

Related

Related Capabilities

  • Cable Assemblies

    Cable assemblies built to your drawing, terminated, marked and 100% electrically tested.

  • Box Build

    Panels and electrical assemblies built and wired to your layout and wiring schedule.