Rewiring your car’s OBD2 port can be a cost-effective way to enhance security or troubleshoot electrical issues. The actual cost depends on several factors, ranging from simple DIY solutions to more complex professional installations. This article breaks down the potential expenses associated with rewiring your OBD2 port.
Factors Affecting Rewiring Costs
The price of rewiring an OBD2 port varies greatly depending on:
- DIY vs. Professional Installation: Opting for a do-it-yourself approach will significantly reduce the cost, as you’ll only need to purchase the necessary parts. Professional installation will incur labor charges, which can vary depending on the mechanic’s hourly rate and the complexity of the job.
- Parts Required: A simple rewiring might only require a new OBD2 connector, wires, and basic electrical connectors. More complex modifications could necessitate additional components like relays, fuses, or even a custom wiring harness.
- Complexity of the Rewiring: A straightforward replacement of the existing connector with a new one in the same location is relatively simple. Relocating the port, adding security features, or integrating it with other systems will increase complexity and cost.
- Vehicle Make and Model: Accessing and working with the wiring in some vehicles can be more challenging than others, potentially affecting labor time and cost for professional installations.
Estimated Cost Breakdown
DIY Rewiring:
- Basic Connector Replacement: A new OBD2 connector can be purchased for as little as $5 to $15 from online retailers like Mouser Electronics.
- Wiring and Connectors: Wires, electrical connectors, and other small parts might add another $10 to $20 to the total.
Total Estimated DIY Cost: $15 to $35
Example of an OBD2 connector and retainer available for purchase.
Close-up of an OBD2 retainer.
Professional Rewiring:
- Labor Costs: Mechanic labor rates typically range from $50 to $150 per hour. A simple OBD2 port replacement could take 1-2 hours, while more complex rewiring could require several hours.
- Parts Markup: Expect to pay a markup on parts purchased by the mechanic.
- Diagnostic Fees: Some shops might charge a diagnostic fee to assess the existing wiring and determine the best course of action.
Total Estimated Professional Cost: $100 to $500+
Hidden OBD2 Port Relocation: A Free Security Measure
Accessing the back of the OBD2 port.
One cost-effective security measure is to simply relocate the existing OBD2 port to a hidden location within the vehicle. This involves detaching the connector, which is often held in place with simple clips, and rerouting it to a less accessible area. This method doesn’t require any new parts and can be done for free if you’re comfortable working with basic car electronics.
Example of an OBD2 wiring harness.
OBD2 schematic diagram.
Conclusion
Rewiring your OBD2 port can be a simple and affordable DIY project or a more involved professional service. The cost depends on the complexity of the task and whether you choose to do it yourself or hire a mechanic. Consider your needs and budget when deciding on the best approach. Remember, even a simple relocation of the port can provide a significant security benefit at no cost. A protective cover for the relocated port is recommended to prevent shorts.
Example of a protective cover for an OBD2 port.
