JAVIK Handlebar Switch for Honda TRX400EX 1999–2004 — Left Start/Stop & Headlight, Direct OEM Fit

JAVIK's handlebar control switch replaces the original start/stop and headlight controls for Honda TRX400EX Sportrax 400 models from 1999 to 2004, restoring full engine and light operation with a direct fit to OEM# 35020-HN1-000.

If your Honda TRX400EX has a worn, damaged, or missing left handlebar switch assembly, this JAVIK replacement returns the familiar engine start/stop and headlight hi/lo functionality without modifying your machine. The unit is designed to match the original OEM mounting points and connector style, making installation straightforward for home mechanics and professionals alike. It covers the essential rider controls you need for safe, reliable operation in everyday trail and utility use.

Which ATV models and years will this switch fit?

This switch is intended specifically for the Honda TRX400EX Sportrax 400 produced between 1999 and 2004. It corresponds to the original equipment part number 35020-HN1-000, so confirming your OEM number is the fastest way to verify compatibility before ordering. Using the correct replacement avoids wiring mismatches and fitment issues.

• Compatible with Honda TRX400EX Sportrax 400 (1999, 2000, 2001, 2002, 2003, 2004)
• Matches OEM part number: 35020-HN1-000
• Designed for direct replacement of factory left handlebar switch
• Check your ATV’s existing part number to confirm fit

What functions are included on this replacement handlebar switch?

The JAVIK assembly provides the core controls riders expect: engine start, engine stop, headlight on/off, and headlight high/low selection. Each position is clearly defined so you can operate lights and ignition without confusion. The wiring and contacts are configured to recreate the factory behavior for reliable operation.

• Engine Start — engage the electric starter
• Engine Stop — kill switch for immediate engine cut-off
• Headlight On/Off — toggle main lights
• Headlight Hi/Lo — switch between high and low beams

How difficult is installation and what comes in the package?

Installation is intended to be simple for anyone familiar with basic ATV maintenance: remove the old switch, unplug the connector, bolt the new unit in place, and reconnect the wiring. The package contains the control switch only; no additional tools or wiring harnesses are included. If you run into trouble, JAVIK provides customer support to assist with fitment or troubleshooting.

• Package includes: 1 × control switch assembly
• Compatibility with factory mounting and connector types for plug-and-play fit
• Basic hand tools required (screwdriver, hex key, or socket set)
• JAVIK 24-hour customer service and 1-year product support

Who is this for: This JAVIK handlebar switch is made for owners and mechanics of Honda TRX400EX Sportrax 400 ATVs (1999–2004) who need an OEM-equivalent replacement for a damaged or nonfunctional left handlebar control. It’s suitable for do-it-yourself repairs, quick shop swap-outs, or as a stocked spare for ATV rental and repair businesses that service these model years. Confirm OEM# 35020-HN1-000 on your old part to ensure a correct match before purchase.