Shunt Relay

🏍️ Linhai Shunt Relay | Hi/Low Beam Switching & Brake Start Control

📦 Part Number: 35656 / 4AA-81940-01

🔧 Shunt Relay / Changeover Relay / SPDT Relay

✅ Compatible with multiple Linhai ATV / UTV models (200cc - 1100cc series)

This is a genuine Linhai quality shunt relay (changeover relay), used for hi/low beam headlight switching and brake-start safety circuit control. Direct replacement for OEM part number: 35656 / 4AA-81940-01.

A shunt relay (also known as changeover relay or SPDT relay) is a special relay with one normally open contact and one normally closed contact. When the coil is energized, the contacts switch, transferring the common terminal from the normally closed contact to the normally open contact, enabling circuit shunting or changeover functions. In Linhai vehicles, this relay is primarily used for:

• Hi/Low Beam Switching: Switches between low beam and high beam headlight circuits
• Brake-Start Safety Control: Ensures the engine can only be started when the brake pedal/lever is pressed

This product features a high-quality coil and silver alloy contacts for reliable switching performance and long service life.

• 🔧 Direct OEM Replacement: Exactly matches Linhai part number 35656 / 4AA-81940-01.
• 🔄 SPDT Contact Configuration: One normally open contact + one normally closed contact for circuit shunting/changeover.
• 🔒 Multi-Function Application: Used for hi/low beam headlight switching and brake-start safety circuit control.
• 🏭 High-Quality Coil: Premium electromagnetic coil ensures reliable pull-in and release performance.
• 🔩 Silver Alloy Contacts: Arc-resistant and wear-resistant for long-term reliable switching.
• 🛡️ Flame-Retardant Housing: Housing made of flame-retardant material for enhanced safety.
• 🔌 Plug and Play: Standard plug-in connector, no wiring modification required, direct replacement.

💡 How It Works: A shunt relay (changeover relay) has one common terminal (COM), one normally closed terminal (NC), and one normally open terminal (NO). When the coil is de-energized, COM connects to NC. When the coil is energized, COM disconnects from NC and connects to NO. This switching characteristic makes it ideal for switching between hi and low beam headlights, or controlling the start signal in a brake-start safety circuit.

⚠️ Failure Symptoms — When to Replace the Shunt Relay:

• Unable to switch between hi and low beam (stuck on low or high beam)
• One headlight does not work, but the bulb is good (burnt or stuck contacts)
• Brake-start function fails (cannot start when brake is applied, but relay clicks)
• Headlight flickers or works intermittently (poor contact)
• Relay makes unusual noise or continuously overheats

If any of the above symptoms occur, replace the shunt relay promptly to ensure safe driving and proper starting function.

✅ Installation Tip: Disconnect the battery negative terminal before replacing the relay. Unplug the old relay and plug in the new relay directly. After installation, verify hi/low beam switching and brake-start function operate normally. If the connector is corroded or loose, clean or replace the connector as needed.

📋 Complete Part Number Summary:

Shunt Relay: 35656 / 4AA-81940-01

Contact Form: SPDT (Single Pole Double Throw)

Functions: Hi/Low Beam Switching / Brake-Start Safety Circuit Control

Fits Models: Linhai 200cc - 1100cc series ATV / UTV (26 models)

🌟 This shunt relay is suitable for multiple Linhai ATV/UTV lighting and starting control systems. As a key component for hi/low beam switching and brake-start control, it offers OEM quality and reliable performance.