• DB9 RS232 Female to OBDII 16-Pin Male top view
  • DB9 RS232 Female and OBDII 16-Pin Male connector
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Custom Automotive Cable Assembly – DB9 RS232 Female to OBDII 16-Pin Male Diagnostic Adapter

Bridge to Legacy Tech: Seamlessly connects modern vehicle OBDII ports to legacy diagnostic hardware or laptops via the DB9 RS232 Female serial interface.

Stable Data Transfer: Designed for clear signal transmission between the vehicle's ECU and serial-based diagnostic software or data loggers.

Durable Construction: Features fully molded connectors with integrated strain relief to prevent wire fatigue during frequent plugging and unplugging.

Custom Pinout Options: Since OBDII to RS232 standards vary by software, we offer fully customizable pin assignments to match your specific hardware requirements.

Compact & Flexible: High-quality flexible cabling ensures easy routing in tight vehicle cabins or garage environments.

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Can't find what you need?

We specialize in custom sourcing and manufacturing. Upload your spec sheet or drawing, and our engineering team will provide a quote within 24 hours.

Manufacturing of unlisted custom assemblies
Support for complex cable & wire harness assemblies
Rapid prototyping for new designs
Equivalent alternatives for obsolete parts
Same-day engineering review
Request Custom Quote
What information do you need to provide a quote for a custom wire harness?

To provide an accurate quote and lead time, please provide:

  1. Technical Drawing or Diagram: Showing pinouts, lengths, and tolerances.
  2. Bill of Materials (BOM): Listing specific connectors (MPN) and wire gauges (AWG).
  3. Estimated Annual Usage (EAU): Helping us optimize pricing for your volume. Note: If you do not have a formal drawing, our engineering team can help create one based on your physical sample.
Can you suggest cost-saving alternatives for expensive connectors (e.g., TE, Molex, JST)?

Yes. We offer variety of alternative components.

We have extensive supply chain relationships in Taiwan and can suggest"Functionally Equivalent"alternatives that are fully compatible with major brands like TE, Molex, or JST but at a significantly lower cost. We will provide datasheets and samples of the alternative components for your approval before production.

How do you ensure quality control for custom cable assemblies?

Every single cable assembly undergoes rigorous testing before leaving our Taiwan facility. Our standard QC process includes:

  • 100% Continuity Testing: Ensuring no opens, shorts, or miswires.
  • Pull Force Testing: Verifying crimp strength.
  • Visual Inspection: Checking for cosmetic defects and label accuracy.
  • Hi-Pot Testing: Available upon request for high-voltage applications to ensure insulation integrity.