AMP Research PowerStep running boards are popular for their convenience, automatically deploying when a door opens. While newer Ram trucks offer plug-and-play installation, older models often require hardwiring. This raises the question: can you power running boards without using the OBD2 port? This article delves into this possibility, exploring the challenges and potential solutions for a hardwired installation.
Understanding the OBD2 Port’s Role
AMP Research initially designed their PowerStep system to utilize the vehicle’s OBD2 port. This port provides access to the Body Control Module (BCM), allowing the running boards to monitor door open/close signals. This plug-and-play approach simplifies installation, making it accessible for most users. However, concerns arise about potential interference with other OBD2 devices, like tuners, particularly for those who frequently modify their vehicle’s settings.
Exploring Hardwiring as an Alternative
Hardwiring offers a potential solution to avoid OBD2 port usage. This involves directly connecting the running boards to the vehicle’s electrical system, bypassing the OBD2 connection. While AMP Research doesn’t officially provide instructions for hardwiring newer Ram models, they suggest referencing older manuals and making necessary modifications.
Challenges and Considerations for Hardwiring
Hardwiring presents several challenges:
- Identifying Trigger Wires: Locating the correct wires for door open/close signals is crucial. Without specific instructions for newer models, this requires careful research and understanding of the vehicle’s wiring diagrams.
- Diode Installation: AMP recommends using diodes (part number 1N4001) to prevent signal backfeeding between door ajar wires. This requires additional components and wiring expertise.
- Harness Modification: The existing harness may need alterations to accommodate the hardwired connection, potentially requiring splicing and adding wires.
The OBD2 Pass-Through Solution
An alternative approach involves using an OBD2 pass-through connector. This allows the PowerStep system to connect to the OBD2 port while providing a secondary port for other devices. While this doesn’t eliminate the OBD2 connection, it addresses potential interference concerns. However, ensuring a secure fit for the pass-through connector is vital, as it might not be directly compatible with all vehicle models.
Addressing Potential Tuner Interference
A common concern is potential interference between the running boards and tuners when using the OBD2 port. AMP clarifies that their system only receives signals from the BCM, not transmitting any data. Therefore, interference is unlikely unless both devices attempt to communicate simultaneously, such as opening a door while actively tuning the vehicle. Practical experience suggests minimal risk, especially if avoiding such simultaneous operations.
Conclusion: Weighing the Options
Ultimately, the decision of whether to hardwire or utilize the OBD2 port (with or without a pass-through) depends on individual needs and technical skills. Hardwiring offers a solution for avoiding the OBD2 port entirely but requires more advanced knowledge and effort. Using an OBD2 pass-through provides a compromise, allowing both the running boards and other devices to connect while minimizing potential interference. Carefully consider your priorities and comfort level before choosing the best installation method for your AMP Research PowerStep running boards. If unsure, consulting a professional installer is recommended.
