Tail Light Converters
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What Is a Tail Light Converter and Why Do You Need One?
If you've ever hitched up a trailer and found that your brake lights or turn signals weren't working correctly on the trailer, a tail light converter is likely the solution. These compact but critical devices bridge the electrical mismatch that exists between many modern tow vehicles and the trailers they pull — and they're an essential piece of any properly equipped towing setup.
Vehicles today use different wiring systems to carry out electrical functions, specifically for taillights, stop or brake lights and turn signals — and as vehicles have advanced, these wiring systems have changed. Most trailers operate on a two-wire system where the brake lights and turn signals operate on the same wire. When the towing vehicle has separate wires for brake lights and turn signals, a tail light converter is required.
How Do Tail Light Converters Work?
Tail light converters are designed to adapt your vehicle's separate turn signal and brake circuits to your trailer's integrated brake and turn signal lights. Electrical converters are designed to splice directly into the taillight wiring, rather than plugging into various sockets — and though it requires a little extra work compared to a custom wiring harness, a tail light converter offers a reliable, long-term connector solution.
Most converters provide a standard trailer wiring connector, usually in the form of a 4-way flat. There are also converters designed to handle more complex wiring situations, including vehicles with PWM (pulse width modulation) or multiplex lighting systems that are increasingly common in newer cars and trucks.
Choosing the Right Tail Light Converter
The converter you choose depends on the type of trailer you'll be towing and the car or truck you'll be towing it with — be sure to consult your owner's manual for their recommendations. Key factors to consider include:
- Wiring system type: Identify whether your vehicle uses a 2-wire, 3-wire, or PWM/multiplex lighting system before selecting a converter.
- LED compatibility: Some converters will work with either LED or incandescent bulbs on both the vehicle and trailer side, while others are limited to incandescent-only systems.
- Circuit protection: Look for models with integrated re-settable short circuit and overload protection to safeguard both the converter and your vehicle's electrical system.
- Powered vs. passive: Powered converters draw from the vehicle battery and are better suited for vehicles with sensitive or low-output lighting circuits, especially those with LEDs or multiplex systems.
Top Brands in Tail Light Converters
Draw-Tite has been a trusted name in trailer hitches and towing accessories since 1946, and their tail light converters carry that same commitment to quality. Draw-Tite tail light converters are designed not to send feedback through the vehicle circuits, feature all solid-state components, and adapt import and domestic vehicles with separate turn and stop lights from a 3-wire system to standard 2-wire trailer wiring.
Working tail lights on your trailer are absolutely essential any time you tow, and a tail light converter provides an effective way to properly equip your vehicle for safe towing. Whether you're hauling a boat, a utility trailer, or a camper, the right converter ensures every driver around you can see your intentions clearly — and that's not just a matter of convenience, it's the law.