Malictele 4 Pin 5 Wire Trailer Wiring Harness Kit

This harness combines a heavy-duty PVC jacket, color-coded conductors, and a Y-design that splits the taillight feed so you can connect both sides without splicing the trailer frame. Built to fit standard 4-way flat sockets, the kit is intended for boats, ATVs, cargo trailers, and other towables where a full taillight feed is needed. It delivers a straightforward, low-profile solution when replacing worn wiring or building new trailer lighting circuits.

How does the Y-shape 5-wire design simplify dual taillight wiring?

The Y-shaped layout gives you two brown output leads so both left and right taillights receive the same taillight/stop signal without additional jumpers. This reduces installation steps, avoids extra connectors along the frame, and helps keep wiring tidy and protected under the jacket.

• Two brown wires for left/right taillights — no extra splicing required
• Single 4-way plug input aligns with common trailer sockets
• Color-coded wires speed identification and hookup
• Pre-jacketed cable minimizes exposure to elements and abrasion

What materials and construction make this harness weather-resistant?

The harness uses 16 AWG copper cores housed in a thickened, corrosion-resistant PVC jacket engineered for outdoor use. The outer sheathing is tough and flexible, resisting abrasion, road debris, and moisture to prolong service life even on frequently used trailers.

• 16 AWG copper conductors for dependable current handling
• Thick PVC outer jacket for abrasion and moisture protection
• Corrosion-resistant finishes on connector ends where applicable
• Flexible cable that resists cracking in movement and bends

Will this harness fit my trailer and how long is the cable?

This kit matches standard 4-way flat trailer sockets and is suitable for most boats, utility trailers, and ATV trailers. The full 26-foot length gives ample reach from vehicle connector to trailer lighting points, and a 3.9-foot ground lead helps secure an effective earth connection.

• Total cable length: 26 feet — covers long tongue and crossmember layouts
• 3.9-foot separate ground wire for reliable grounding options
• Designed for standard 4-way flat systems (not for motorcycle trailer wiring)
• Easy to trim and route for custom installations

How easy is installation and what connections are included?

Color-coded conductors make matching the vehicle wiring to brake, turn, and taillight functions quick and accurate. The kit is built to reduce time on the lift or jackstand by minimizing soldering and extra connectors for common trailer wiring tasks.

• Color-coded wires for quick identification and hookup
• Pre-jacketed assembly avoids additional sleeving steps
• Simple 4-pin flat plug fits standard vehicle receptacles
• Y-design eliminates need for additional jumper wires for taillights

Who is this for: The Malictele 4-pin 5-wire harness is aimed at DIY trailer owners, small fleet maintainers, and boaters who need a rugged, easy-to-install replacement or upgrade for standard 4-way lighting systems. If you want a pre-jacketed solution with a split taillight feed and long reach—suitable for utility trailers, boat trailers, and ATV haulers—this kit delivers a practical, weather-resistant option. It is not intended for motorcycle trailer electrical systems or non-standard multi-pin connectors.