Product Purpose

This universal bus combination stalk switch is an essential steering column control spare part for buses and commercial vehicles. It integrates high low beam headlight, turn signal and horn control functions on one ergonomic operating stalk. It can replace aging or damaged original switches, restore the normal operation of vehicle lighting, turn indication and horn system, and satisfy routine operation and maintenance requirements of passenger and commercial vehicles.

Product Features

It adopts reinforced die-cast aluminum base, which brings solid structure and excellent vibration resistance. The flexible accordion dust boot blocks dust and contaminants to protect internal components. Function icons are laser printed on the stalk, wear-resistant and easy to identify. It is equipped with heavy-duty insulated wiring harness and dual black snap-lock connectors for stable and convenient connection. Every switch goes through full quality inspection before shipment and meets CE RoHS and ISO standards. Snap-in plug design supports plug and play without complicated wire modification.

Product Advantages

Wide compatibility covers city buses coaches mini buses commercial trucks and special vehicles. OEM matching structure ensures precise installation without modification. Corrosion-resistant material adapts to complex working environments. Ergonomic stalk design provides smooth and comfortable operation feel. Strict quality inspection reduces circuit related hidden risks. Simple plug-in installation effectively shortens vehicle maintenance downtime.

Installation Steps

1. Disconnect the vehicle main power supply before installation to avoid short circuit and electric hazard.

2. Remove the steering column protective cover to expose the original combination switch assembly.

3. Unplug the dual black snap-lock connectors from the old switch.

4. Loosen the fixing bolts and take the old switch out from the steering column.

5. Place the new 3774-00040 switch into the mounting position and tighten the fixing bolts properly.

6. Connect the two snap-lock plugs of the new switch, confirm both connectors are fully locked.

7. Refit the steering column protective cover, restore power supply and test headlight turn signal and horn functions one by one.

Notes

1. Do not force the plug connection if pin arrangement does not match, to avoid pin bending and circuit damage.

2. Do not apply excessive force to toggle the stalk, which may damage internal contact components.

3. Keep the switch away from water mud and corrosive liquid during installation and usage.

4. If any function fails after installation, check whether the connectors are loose or terminals are oxidized.

5. This switch is only suitable for matching buses and commercial vehicles, do not use it on incompatible models.

6. Professional technicians are recommended to finish the installation for reliable assembly and driving safety.

Xi'an Jieguan Trading Co., Ltd.
Founded 22 years ago, we are an integrated manufacturer & foreign trade enterprise specializing in full-range commercial vehicle spare parts, located in Xi'an, Shaanxi Province, China.
 
Our company owns a 300-square-meter modern office space, paired with a self-operated production factory covering 6,000 square meters, alongside large independent warehouses for sufficient stock supply.
 
We are authorized official distributor for major bus brands: Yutong, Kinglong, Golden Dragon, Higer, Zhongtong, Ankai, Foton. Our product portfolio covers complete spare parts for large passenger buses, Coaster medium buses, small van vehicles, light trucks and cargo trucks.
 
Backed by professional technical teams and self-owned production lines, we develop and manufacture a wide series of auto spare parts independently. With two decades of industry experience, our team delivers highly professional technical & after-sales support.
 
We dedicate ourselves to supplying cost-effective, reliable auto spare parts to global clients, providing practical solutions to all vehicle maintenance demands worldwide.