How to Make RAM Tow Mirror Lights Stay On: Fast-Track Guide to Keeping Your Tow Mirror Lights On

RAM tow mirror lights are a practical feature for many truck owners, improving safety and visibility when towing. Typically, these mirror lights function as turn signals or courtesy/puddle lights that illuminate when unlocking the vehicle or opening a door. However, many RAM truck owners would like these lights to remain on continuously while driving or working around the vehicle. If you're looking for a way to make your RAM tow mirror lights stay on, here’s a clear and actionable approach.

Step 1: Understand the Wiring

The tow mirror lights are usually controlled by the vehicle's Body Control Module (BCM), which only allows them to turn on during specific actions, like unlocking the car or activating turn signals. To keep the lights on, you’ll either need to reroute the wiring or add a new switch that bypasses the BCM’s control.

Step 2: Gather Required Materials

You’ll likely need basic tools (screwdrivers, pliers), some automotive wiring, connectors, a relay, and a switch. If you’re unfamiliar with vehicle electronics, consult a professional or detailed diagrams for your specific RAM model.

Step 3: Install a Bypass Switch

Locate the positive wire feeding power to the tow mirror lights. Splice in a relay—a relay allows a low-current signal (from your new switch) to safely control the higher-current mirror lights. Wire the switch to an interior location of your choice, allowing you to manually turn on the tow mirror lights independently of the BCM.

Step 4: Consider Power Source

Connect the bypass circuit either to an always-hot 12V power source (so you can turn the lights on anytime with the switch) or to an ignition-switched circuit (so the lights can only be activated when the vehicle is on, preventing accidental battery drain).

Step 5: Test the Setup

Once all connections are made, test the setup. Ensure that your tow mirror lights operate as usual when you unlock the truck or activate turn signals, but also stay on when you flip the manual switch.

As an interior designer, I always emphasize the importance of lighting—not just for safety but also for creating a purposeful and attractive working environment. If you’re interested in planning the best lighting, not only for your vehicle but for your garage, driveway, or home exterior, using a well-designed room planner can help you visualize and configure optimal setups to support both function and aesthetics.

Tips 1:

Always use automotive-grade wiring and components to ensure durability and safety during the installation. If you’re not confident in your electrical skills, it’s best to consult with a professional to avoid damage to your vehicle’s electrical system.

FAQ

Q: Will making RAM tow mirror lights stay on drain my battery?

A: If connected to an always-on power source, leaving the lights on for extended periods can drain your battery. Use a switch and remember to turn them off when not needed.

Q: Is it legal to have tow mirror lights on while driving?

A: Laws vary by state and country. Check your local vehicle lighting regulations to ensure continuous mirror illumination is permitted.

Q: Can this modification void my vehicle warranty?

A: Modifying factory wiring may void warranties related to the affected systems. Consult your RAM dealer before making changes.

Q: Will this setup interfere with existing factory light functions?

A: If installed correctly with a relay and switch, normal functions (like turn signals) should remain unaffected.

Q: Are there aftermarket kits available for this purpose?

A: Yes, some companies offer plug-and-play kits designed for RAM trucks, which can simplify the process and reduce risk of wiring errors.