Fastchoy Auto Wiring Harness 2-Lead – 12V Nylon Kit with 40A Relay & 30A Fuse

Overview

The Fastchoy Auto Wiring Harness Kit is designed to power two lights from any 12V source, with a practical maximum load of 300W. Its 14.7-foot length offers flexible routing, ideal for mounting fog lights on a bumper or LED pods on a roof rail. The integrated 3-pin on/off rocker switch includes a red indicator, helping you confirm the light status even in dim cabins.

Durability and protection

Constructed with an abrasion-resistant nylon jacket and high-tensile copper conductors, the harness resists cracking and fraying while staying cool in hot engine bays and flexing in cold weather. The waterproof fuse housing and weather-sealed relay block shield connections from moisture, dust, and corrosion for longer-lasting performance.

Safety and control

The setup incorporates a 40A relay and a 30A fuse, plus a 4-pole relay for stable current management. While safety is built into every component, users should follow proper wiring practices and vehicle guidelines for best results.

Universal fitment and versatility

Designed for any 12V powered device, it supports LED light bars from 1” to 54” and is suitable for fog lights, LED pods, rock lights, driving lights, off-road lights, and backup lights. Easy installation is aided by standard insulated connectors.

Package contents

• 14.7 ft 2-lead wiring harness
• On/off rocker switch with red indicator
• 40A relay and 30A fuse
• Male and female fully insulated connectors, heat shrink tubes

Quick specs at a glance

• Max load: up to 300W
• Length: 14.7 ft
• Two-lead configuration for two lights
• Includes 40A relay and 30A fuse for safe operation

Real-world uses

Pair fog lights for enhanced night visibility on backroads, or power LED pods for daytime-to-night transitions on a UTV. The extra length helps route wires around tight engine bays and vehicle frames without crowding other components.