Integrating aftermarket power running boards, often referred to as “amp steps,” with a vehicle’s electrical system can be complex. This article clarifies the relationship between amp steps and the OBD2 plug, specifically addressing common installation challenges and solutions. Many users seek a way to avoid using the OBD2 port for amp step installation to keep it free for other diagnostic tools.
Bypassing the OBD2 Port for Amp Step Installation
While some amp step systems utilize the OBD2 port for power and control, this method can present issues, especially for users who rely on the port for diagnostic tools or other accessories. Direct wiring to the vehicle’s electrical system, bypassing the OBD2 port, offers a more permanent and reliable solution. This involves tapping into the vehicle’s door switches to trigger the deployment and retraction of the running boards.
One common concern is compatibility between aftermarket amp steps and the vehicle’s onboard systems. For example, some Ford trucks utilize step motors with built-in sensors to monitor deployment status. Aftermarket amp steps may not have these sensors, leading to potential conflicts if connected directly to the factory system. Therefore, using a dedicated amp step controller is necessary.
Utilizing Door Switches for Amp Step Activation
A preferred method for installing amp steps involves utilizing the vehicle’s door switches. This approach eliminates the need for an OBD2 connection and provides a seamless integration with the vehicle’s existing functionality. When a door opens, the corresponding switch provides a ground signal to the amp step controller, activating the running boards. Conversely, closing the door removes the ground, signaling the controller to retract the steps.
This wiring method requires specific knowledge of the vehicle’s wiring diagram and the amp step controller’s input requirements.
The diagram above provides a general overview of this wiring configuration. It’s crucial to consult your specific vehicle and amp step controller documentation for accurate wiring instructions. Color codes and pin assignments can vary between vehicle models and controller versions. Incorrect wiring can lead to malfunctions or damage to the vehicle’s electrical system.
Conclusion
Understanding the relationship between amp steps and the OBD2 plug is essential for successful installation. While the OBD2 port might offer a seemingly simple connection point, direct wiring using door switches offers a more reliable and integrated solution. This method frees up the OBD2 port for diagnostics and avoids potential conflicts with the vehicle’s onboard systems. Always consult your vehicle and amp step documentation for precise wiring instructions to ensure a safe and functional installation.
