Custom wire harnesses and cable assemblies for automotive, medical, robotics, aerospace, industrial, and consumer applications. Material sourcing, precision build, in-line test, and scheduled delivery — with the compliance documentation regulated industries require.
Custom cable and harness assembly is the build of wire harnesses and cable assemblies to a customer print. RLX Solutions builds these for automotive, medical, robotics, aerospace, industrial, and consumer applications, to IPC/WHMA-A-620 workmanship.
From low-volume prototypes to recurring high-mix production runs, we build wiring harnesses and cable assemblies engineered to the mechanical, electrical, and environmental demands of the end product. Our team operates as an extension of your engineering group — advising on connector selection, conductor sizing, shielding strategy, and service-life performance before a single wire is cut.
We specialize in medium-complexity through high-reliability builds: multi-conductor cables, overmolded assemblies, high-voltage EV harnesses, EMI-shielded interconnects for robotics and automation, waterproof assemblies for outdoor and marine use, and regulated-industry programs where traceability and documentation matter as much as the build.
Every program is backed by integrated material sourcing, CAD-driven schematic control, pull-test and continuity-verified production, and a quality system aligned to ISO 9001:2015 with program-specific alignment to IATF 16949, ISO 13485, IPC/WHMA-A-620, RoHS, and REACH.
Whether your BOM calls for a single MIL-spec circular or a 300-node automotive harness, we have the tooling, connector inventory, and process engineering to deliver. If your application doesn't fit a category below, we build custom-to-custom.
Color-coded 50 Ω RF connector assemblies for automotive GPS, GNSS, LTE, V2X, and infotainment — keyed polarization to prevent mis-mating.
MIL-DTL-38999, MIL-DTL-5015, and related circular connector assemblies for aerospace, defense, and heavy industrial — shock, vibration, moisture resistant.
Compact, rugged CAT 6A / CAT 7 Ethernet assemblies for automation, robotics, and industrial IoT — built for constrained space.
IP67 / IP68-rated sensor and fieldbus assemblies in A / B / D / X coding — Ethernet, PROFINET, DeviceNet, custom pinouts.
Miniaturized Ethernet interconnects for medical, wearable, and space-constrained embedded systems.
PH, XH, GH, SH, ZH, SM board-to-wire assemblies — workhorse for consumer electronics, battery packs, embedded hardware.
Mini-Fit, Micro-Fit, KK, Mega-Fit, Pico-Clasp assemblies crimped and tested to manufacturer specifications.
IDC-terminated flat-ribbon assemblies in 1.27 mm, 1.0 mm, and 0.635 mm pitches — board-to-board, backplane, chassis.
Strain-relieved, environmentally sealed cable ends molded in PVC, TPE, TPU, or PUR — specified durometer, color, imprint.
Tooling-supported Y-splits, junctions, and custom geometries for production runs that warrant a dedicated tool.
50 Ω and 75 Ω coax using SMA, SMB, N-Type, BNC, TNC, MCX, U.FL, Fakra — swept to VSWR and insertion loss on request.
DisplayPort, HDMI, USB 3.x, SATA assemblies built with high-speed shielded cable, qualified to the signaling spec.
High-current DC for EV, energy storage, backup power — 18 AWG signal cables to 4/0 AWG battery leads with lug termination.
Mixed-gauge, mixed-signal assemblies combining power, data, and control into a single jacketed or braided cable.
Turnkey custom harness programs built to your drawing package — schematic review, first-article approval, PPAP-style documentation on request.
IP67 / IP68 builds using sealed connectors, heat-shrink boots, potted breakouts — marine, outdoor, agricultural, washdown.
Orange-jacketed HV cable, HV interlock loops, shielded terminations for battery packs, inverters, charging systems.
Braided, foil, and hybrid-shield constructions with 360° termination for signal-integrity and emissions-compliance programs.
Automotive interior harnesses routing power, CAN, LIN, and lighting circuits — convoluted tubing, tape wrap, clip locations to print.
Heat- and chemical-resistant harnesses for engine bays, transmissions, underhood — rated for sustained high-temperature service.
Heavy-duty DT / DTM-terminated harnesses for commercial vehicles, trailers, fleet upfit — built for vibration and environmental exposure.
UL-recognized appliance wiring for HVAC, white goods, commercial kitchen equipment, laundry — fast-on, ring, spade terminations.
Continuous-flex-rated harnesses for robot arms, cable tracks, moving machinery — torsion, bend, and fatigue designed in.
Biocompatible, sterilization-capable harnesses aligned to ISO 13485 for diagnostic, monitoring, and therapeutic equipment.
MC4-terminated PV cable, string combiners, DC-side balance-of-system harnesses for utility, commercial, residential solar.
Lightweight, high-reliability harnesses with traceable materials for manned aircraft, UAV, and drone applications.
First-article builds with expedited material kitting and schematic-to-harness support — 7-day prototype standard.
Ongoing production for OEMs and Tier-1s who want to own the design and spec while outsourcing build, test, and logistics. NDAs available.
Highly flexible cables rated for millions of bend cycles — drag-chain, robotic, servo applications.
Large rectangular and modular connector systems (Han, HDC, HDD equivalents) for industrial machinery and power distribution.
Builds qualified for salt-spray, oil, fuel, UV, and temperature extremes — materials and terminations validated to use case.
Throttle cable assemblies, push-pull mechanical cables, lawn-mower and small-engine harnesses, and other niche legacy builds.
Obsolete or poorly documented harness? Send a sample — we develop a drawing package, source equivalents, and produce replacements.
Labeled, bagged, sub-assembly-kitted deliveries that drop directly into your production line or sub-contractor's process.
The terms get used interchangeably but describe different constructions. Knowing the difference helps you specify what you actually need.
An assembly of insulated conductors bundled together — typically with tape, lacing, loom, convoluted tubing, or sleeving — that routes power and signals along a defined path with multiple branches and terminations.
One or more conductors housed inside a unified jacket — typically PVC, polyurethane, TPE, or rubber — with a defined connector at each end. Built as a single robust interconnect for demanding environments.
We bring institutional knowledge of standards, connector preferences, and reliability expectations specific to your market.
A disciplined workflow — documented checkpoints, visible progress, committed timelines.
Share drawing, BOM, or a sample. Line-item quote with lead time, typically inside 12 hours.
Engineers review schematic, suggest material and connector optimizations, produce the manufacturing drawing.
A production-intent first article, typically within 7 days. You review, test, and sign off before we proceed.
Continuity, hi-pot, pull-test, and where specified: shielding, signal, waterproof, or environmental verification.
Scaled build — precision cut, strip, crimp, assembly — in-process QC, inspection report on request. 15–20 days typical.
Final inspection, labeling, packing to spec, shipment to your dock — traceability documentation included.
A documented quality management system with program-specific alignment to the standards your end market requires. Inspection reports available during and after production.
A representative snapshot — regulated-industry builds, mid-volume OEM programs, high-precision assemblies — all shipped on committed timelines.
Precision harnesses supporting HV and LV circuits with specific shielding, tensile, and flex-life requirements for engine-bay and cabin routing. Prototype delivered in 7 days; full production completed in 15–20 days with inspection documentation at each stage.
Cable assemblies engineered to survive repeated sterilization cycles, deliver clean signal transmission for diagnostic accuracy, and meet medical-device quality expectations — all within an 8-week production window tied to launch schedule.
A connected-hardware company needed a harness engineered around a tight controller footprint — lightweight conductors, compact terminations, cost-optimized materials — without compromising electrical margin. Engineering collaborated on schematic and material selection.
Share your drawing, BOM, or sample — we'll come back with pricing, lead time, and any engineering feedback.
