Agrieyes Trailer Light Converter CT012 — 2-to-3-Wire Converter for Dinghy Towing, Weather-Resistant

The Agrieyes CT012 Trailer Light Converter transforms a vehicle's 2-wire tail light wiring into a standard 3-wire system so brake and turn signals work independently on the towed vehicle.

Many tow setups use older 2-wire tail light systems that combine turn and brake signals, causing a towed car's lights to blink when brakes are applied. The Agrieyes CT012 solves that by separating those signals into a conventional 3-wire output, letting the towed vehicle display correct brake, left turn and right turn indications — including when using modern LED lights. Compact, weather-resistant and simple to install, this unit is intended for dinghy towing, RV use, pickups and trucks that need a reliable wiring adapter.

How does the CT012 keep brake and turn lights showing correctly while towing?

The converter isolates the combined brake/turn input from a 2-wire vehicle and outputs three distinct circuits: left turn, right turn and brake/tail. It uses surface mount electronics to handle the signal separation cleanly without adding a separate flasher or tapping a battery. That means the towed vehicle’s lights behave just like a native 3-wire system, preventing confusing flashing during braking.

• Splits combined turn/brake signals into independent left, right, and brake outputs
• Works with standard 4-way flat sockets or direct tail light splices
• Compatible with LED tail lamps without extra relays

Is installation difficult and what tools are needed?

Installation is straightforward thanks to the CT012's color-coded wiring and clear instructions. It can be spliced directly into the towed vehicle’s tail light wires or connected at the 4-way flat trailer socket. You don't need a heavy-duty flasher or a dedicated battery feed to make it work — just basic hand tools and secure wire connections.

• Color-coded leads match common vehicle wiring standards
• Splice-in or socket-mounted options for flexible placement
• Requires only crimping/soldering tools and basic electrical tape or heat-shrink

Will this converter hold up to weather and extended use?

The CT012 is built with a durable ABS housing and surface-mount circuitry that minimizes heat buildup during operation. The enclosure helps keep moisture out, while the compact electronics are designed for long-term stability under typical towing conditions. That makes it suitable for extended trips and seasonal use with reduced risk of failure from heat or humidity.

• ABS case resists moisture and road debris
• Surface-mount technology reduces internal heat for longevity
• Small footprint allows protected mounting inside wheel wells or under dash

What vehicles and lights are compatible with this converter?

The Agrieyes CT012 works well for dinghy-towed cars, RVs, trucks and pickups that originally have a 2-wire combined brake/turn setup or need a clean 3-wire output. It is compatible with incandescent and LED tail lights, making it a versatile choice whether you have older trailers or upgraded modern lamps. Its compact 3" x 2" x 0.9" size lets you mount it in tight locations without affecting vehicle aesthetics.

• Ideal for dinghy/tow-behind vehicle conversions
• Supports LED and incandescent tail light systems
• Compact dimensions fit under dash, behind trim panels, or near sockets

Who is this for? The Agrieyes CT012 is for anyone converting a two-wire tail light system to a standard three-wire arrangement: RV owners towing a secondary vehicle, drivers retrofitting trailers or trucks to work with modern LED lights, and DIYers who want a clean, reliable signal separation without adding heavy-duty flashers or complex battery hookups. If you need a compact, weather-resistant, and easy-to-install solution to restore separate brake and turn function on a towed vehicle, this converter is built for that job.