Custom Molex Wire Harnesses
Precision Internal Routing with Molex Interconnects
As a leading contract manufacturer, TeleWire Technology specializes in high-volume, automated production of custom Molex wire harnesses. Designed for complex internal chassis routing, our assemblies provide secure, high-retention power and signal distribution for consumer electronics, industrial appliances, and server infrastructure.
Supported Molex Connector Series:
- Mini-Fit Jr.™ & Mega-Fit®: High-current internal power distribution up to 23A.
- Micro-Fit 3.0™ & Nano-Fit™: High-density, space-saving signal routing.
- KK® 254 & KK® 396: Cost-effective, highly reliable wire-to-board solutions.
Looking for Custom Wire Harnesses & Cable Assembly ?
Submit your technical requirements and project details, and our engineering team will review your request and respond within 24 hours.
Supported Series & Part Numbers
We maintain extensive tooling and automated processing capabilities for the following industry-standard interconnects. If your specific part number is not listed, contact engineering for 1:1 cross-referencing.
| Connector Series | Pitch (mm / inch) | Supported Receptacles / Housings | Ideal Application |
|---|---|---|---|
| Molex PicoBlade™ | 1.25mm (.049") |
5102151047510225326153398530475304851146
|
Ultra-compact wire-to-board routing for tight chassis, drones, and medical displays. |
| Molex Micro-Fit 3.0™ | 3.00mm (.118") |
430254364543020436404304543650
|
High-density signal and mid-range power routing (Up to 8.5A) for servers and industrial equipment. |
| Molex Mini-Fit Jr.™ | 4.20mm (.165") |
55575559556655694240442440
|
The global standard for high-current internal power distribution (Up to 13A) in white goods, servers, and ATX power. |
| Molex KK® 254 | 2.54mm (.100") |
2695647178804030423754237743804705347054
|
Cost-effective, high-volume standard signal transmission for consumer electronics and HVAC controls. |
| Molex KK® 396 | 3.96mm (.156") |
21393069416954167141672416614166231903192
|
High-vibration internal power routing (Up to 7A) for heavy industrial appliances and vending machines. |
| Molex CLIK-Mate™ | 1.25mm / 1.50mm / 2.00mm |
502578503149502439502584503153502585503154505406505405
|
Secure, positive-locking mating for automotive LED arrays and high-vibration smart meter displays. |
| Molex Nano-Fit™ | 2.50mm (.098") |
105307105308105309105311105310105312105313105314
|
Fully isolated, compact power routing (Up to 8A) preventing cross-mating and short circuits in telecom. |
| Molex SL™ (Stackable Linear) | 2.54mm (.100") |
7006670107704007054370553705457063471192
|
Modular, low-profile wire-to-board and wire-to-wire arrays for robotics and automotive dashboard panels. |
| Molex Milli-Grid™ | 2.00mm (.079") |
5111087831878321511178783387568151118151119
|
High-density data, signal arrays, and parallel board-to-board interconnects in networking hubs. |
| Molex Standard .062" Pin and Socket | 3.68mm (.145") |
162503-06-101103-06-102303-06-2023
|
Rugged, standard power and signal wire-to-wire routing (Up to 5A) in household appliances. |
| Molex Standard .093" Pin and Socket | 5.03mm (.198") |
1545319103-09-102203-09-2022
|
Mid-range power routing (Up to 14A) in industrial equipment, vending, and retro gaming cabinets. |
| Molex Mega-Fit® | 5.70mm (.224") |
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|
Extreme high-power delivery (Up to 23A per circuit) for server racks, UPS systems, and heavy machinery. |
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Custom Molex 5557 4.2mm Pitch to Ring Terminal - Wire Harness
Regular price $1.00 USDRegular priceUnit price per -
Molex MX150 16-Pin Sealed Harness (33472-1601/33482-8601) – Custom Wire Harness
Regular price $2.00 USDRegular priceUnit price per -
Molex MX150 6-Pin Electronic Throttle Extension – Custom Wire Harness
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Molex Micro-Fit 3.0mm 2x4 (8-Pin) Male Plug - Custom Wire Harness
Regular price $2.00 USDRegular priceUnit price per -
Molex Micro-Fit 3.0 4-Pin to SB50/75/150A Adapter - Custom Wire Harness
Regular price $15.00 USDRegular priceUnit price per -
Molex Micro-Fit 3.0mm 4-Pin to Fork Terminal - Custom Wire Harness
Regular price $15.00 USDRegular priceUnit price per -
S4-J18ZY-AH-B to Molex 39-03-9062 6-Pin Dual Connector - Custom Wire Harness
Regular price $15.00 USDRegular priceUnit price per
Can't find the exact cable you need?
Our website lists only a fraction of our capabilities. We manufacture thousands of custom cable assemblies and wire harnesses not shown online. Upload your drawing or specs here, and we will build it for you.
Technical FAQs
Common questions from procurement and engineering teams.
What is the difference between Molex Mini-Fit Jr. and Micro-Fit 3.0 wire harnesses?
A: Mini-Fit Jr. harnesses utilize a 4.20mm pitch and are designed for higher-current internal power distribution (up to 13A per circuit). Micro-Fit 3.0 harnesses use a compact 3.00mm pitch, making them ideal for high-density signal routing where chassis space is limited.
Do your custom Molex wire harnesses meet UL standards?
A: Yes. All our Molex internal wire harnesses are manufactured using UL-listed wire (such as UL1007 or UL1015). Our automated crimping lines utilize Crimp Force Monitoring (CFM) to guarantee 100% compliance with strict UL 486A-B tensile strength and safety standards.
Can you manufacture complex multi-breakout Molex routing architectures?
A: Absolutely. Using automated equipment and custom assembly boards, we fabricate complex internal wiring topologies with dozens of precise breakout points, allowing for seamless integration across multiple PCBs, fans, and sensors within a single enclosure.
Manufacturing Standards & Capabilities
ISO 9001 Certified Factory
TeleWire Technology operates under strict ISO 9001 Quality Management Systems. Every production run undergoes rigorous IQC (Incoming Quality Control) and IPQC (In-Process Quality Control) to ensure consistent, OEM-grade reliability for global supply chains.
IPC/WHMA-A-620 Compliance
Our assembly technicians adhere to IPC/WHMA-A-620 standards for cable and wire harness fabrication. We guarantee precision crimp height, pull-force retention, and strain relief integrity for high-vibration automotive and industrial environments.
100% Electrical Testing
Zero defect policy. 100% of finished assemblies undergo automated testing for continuity, shorts, and mis-wiring. For critical safety applications, we provide advanced VSWR testing, high-pot testing, and insertion force validation.
Custom Component Sourcing
We source genuine connectors from Amphenol, TE Connectivity, Molex, and JST, or provide cost-effective, high-quality equivalents to meet your BOM targets. Our engineering team supports rapid prototyping with low MOQs and fast turnaround times.
Have 2D or 3D drawings ready?
Talk to our engineering team for immediate design validation and DFM (Design for Manufacturing) support.