Electric Start Engine Wiring Harness OTOHANS Universal 49-125cc Kit

Description

Product Overview

The OTOHANS Electric Start Engine Wiring Harness is a fully integrated solution for upgrading or repairing small displacement engines ranging from 49cc to 125cc. Crafted from high‑temperature resistant PVC and copper conductors, the loom provides a clean, organized pathway for power and signal transmission. The kit includes a five‑pin CDI unit, a heavy‑duty solenoid relay, a voltage regulator (rectifier), a waterproof dual‑key ignition switch, and a set of color‑coded wires that simplify troubleshooting. All components are pre‑assembled into a single harness, reducing installation time and minimizing the risk of wiring errors. The harness measures 1 × 1 × 1 inches and weighs only 0.32 ounces, making it lightweight yet robust enough for the rigors of off‑road use.

Usage

This wiring harness is engineered for a wide variety of powersports applications, including ATVs, go‑karts, pit bikes, dirt bikes, and small utility vehicles. Whether you are restoring a vintage 49cc engine or upgrading a modern 125cc quad, the harness delivers reliable ignition and charging performance. The red and black wires serve as the primary ignition leads, while the blue and white wires act as trigger signals for the CDI. Double‑yellow wires handle the charging circuit, feeding the voltage regulator to protect the battery. Green grounding wires ensure a solid electrical return path. The harness is compatible with both gasoline and electric‑start configurations, making it a versatile choice for hobbyists, mechanics, and professional service shops.

Why Choose Us

OTOHANS Automotive has a reputation for delivering durable, high‑quality components that meet the demanding standards of the powersports industry. Each harness undergoes rigorous testing for voltage tolerance, heat resistance, and mechanical durability. The included installation guide provides step‑by‑step instructions, complete with wiring diagrams and torque specifications, ensuring even first‑time installers can achieve a professional result. Our customer support team is available to answer technical questions, and we offer a 90‑day warranty on all parts to give you confidence in your purchase. By choosing this harness, you benefit from a product that combines precision engineering with practical design, reducing downtime and extending the life of your engine.

Key Features

• All‑in‑one kit includes CDI, solenoid, rectifier, and waterproof ignition switch for complete engine control.
• Color‑coded wiring simplifies installation and future maintenance, saving you time and effort.
• High‑temperature PVC jacket and copper conductors provide durability in harsh outdoor environments.
• Universal fit for 49‑125cc Chinese‑made engines, covering ATVs, go‑karts, dirt bikes, and more.
• Dedicated after‑sales support and a 90‑day warranty ensure peace of mind and reliable service.

FAQ

Is this harness compatible with my 80cc ATV engine?

Yes. The harness is designed to work with any Chinese‑made engine between 49cc and 125cc, including 80cc models commonly found on ATVs.

Do I need any additional tools to install the harness?

All you need are basic hand tools such as a screwdriver set and a torque wrench. The included instructions detail the exact torque values for each bolt.

Can the ignition switch be used in wet conditions?

The ignition switch is rated IP68, meaning it is fully waterproof and can withstand immersion in water, making it ideal for off‑road and marine environments.

What should I do if the engine still does not start after installation?

First, verify the wiring connections against the diagram provided. Check the battery voltage, ensure the CDI is seated correctly, and confirm the solenoid clicks when the throttle is engaged. If the problem persists, contact our support team for troubleshooting assistance.

Is there a warranty on this product?

Yes, the wiring harness comes with a 90‑day warranty covering any manufacturing defects. Register your product on our website to activate the warranty.