NEW SUN 80" 3-to-2 Way Tail Light Converter Cable — 100% Copper, Weatherproof Sealed Harness

The NEW SUN 80" 3-to-2 way tail light converter is a weather-resistant, 100% copper wire harness that adapts three-conductor trailer wiring to a two-way flat plug for reliable brake, turn, and tail light signaling.

When towing, mismatched plugs and exposed connections are common causes of intermittent lighting and unsafe trailers. This NEW SUN converter provides an inline adapter with color-coded leads and a sealed housing to convert three- or multi-wire trailer outputs into a two-way flat configuration. Built with full copper conductors and a long 80-inch cable, it simplifies hookups for utility trailers, small boats, lawn equipment trailers, and other towed gear while resisting corrosion from road and weather exposure.

How does the converter preserve signal reliability on the road?

The harness uses 100% copper conductors to maintain low resistance and consistent current for brake, turn, and tail signals. The sealed connections reduce moisture intrusion and galvanic corrosion, helping lights stay bright and responsive even after repeated exposure to elements.

• Full copper wiring for steady electrical transmission
• Weatherproof seal blocks water and dirt
• Corrosion-resistant contacts for long-term performance
• Inline design reduces strain on vehicle or trailer plugs

What vehicles and trailers work with this 3-to-2 way adapter?

This adapter is intended for trailers and tow vehicles where a multi-wire plug must be converted to a simpler 2-way flat setup. It’s suitable for light-duty towing tasks like small utility trailers, boat trailers with basic lighting, and lawn/garden trailers that only require tail and ground connections.

• Compatible with 3-wire and many multi-pin trailer outputs
• Best for trailers needing a 2-way flat input
• Works on trucks, SUVs, ATVs with matching pin layouts
• Check your existing pin colors and functions before installing

How easy is installation and what tools are required?

Installation is straightforward thanks to color-coded leads and an inline harness design that connects between existing plugs. Basic hand tools like wire strippers and crimpers or butt connectors are usually sufficient; solder and heat shrink can be used for a more permanent seal.

• Color-coded wires for quick identification and hookup
• 80-inch cable length provides flexible routing options
• Works with common crimp or solder termination methods
• No special electronic tools required for typical installs

What maintenance extends the converter’s service life?

Periodic inspection and cleaning of the connector faces prevents buildup and maintains a good electrical path. Ensure the sealed housing remains intact; replace or re-seal any compromised areas and secure the cable to avoid chafing or repeated flexing that can weaken conductors.

• Inspect connectors after winter or heavy rain exposure
• Clean contacts with electrical contact cleaner as needed
• Secure cable with clamps or zip ties where it could rub
• Re-seal or replace if housing shows cracks or water ingress

Who is this for? If you tow lightweight trailers, small boats, or utility equipment and need a dependable, weatherproof way to convert a multi-wire connection down to a two-way flat plug, the NEW SUN 80" 3-to-2 way tail light converter is built for you. It’s designed for DIY installers, fleet users, and occasional haulers who want corrosion-resistant copper wiring, a long reach for flexible routing, and a simple color-coded hookup that minimizes wiring guesswork. Before purchasing, confirm your trailer and vehicle pin layout and required functions to ensure this adapter matches your towing setup.