How to Replace Light Bulbs on a 2025 Yamaha V Star 250

Yamaha V Star 250 · 2025 · Light Bulbs

Light Bulb Replacement Guide: 2025 Yamaha V Star 250

This guide covers every exterior light bulb position on the 2025 Yamaha V Star 250, including the headlight (low/high beam), front and rear turn signals, tail/brake light, running lights, and license plate light. The V Star 250 is a 250cc V-twin small cruiser with classic styling and the simplest possible lighting system — no fairing, standard H4 headlight, and conventional bulb types throughout, making it ideal for beginner mechanics.

Quick Reference Bulb Table

Difficulty & Time Estimate

• Difficulty Level: Beginner (1 out of 5) — this is one of the easiest motorcycles on which to replace bulbs.
• Estimated Time: 10-20 minutes depending on positions replaced
• Best Done: In a well-lit area with the bike on its sidestand. No fairing, no complex disassembly required.

Complete Tool List

Torque Reference (Yamaha V Star 250): Headlight housing screws 1.5-2.0 Nm; tail light housing bolts 2.0-3.0 Nm; turn signal bracket nuts 5.0-6.0 Nm.

OEM Part Numbers & Aftermarket Alternatives

Note: The V Star 250 uses a lower-wattage H4 (35/35W compared to larger bikes' 60/55W). Verify your specific bike's headlight wattage before purchasing.

Step-by-Step Instructions

Headlight (H4 / 9003) — Low and High Beam

The 2025 V Star 250 uses an H4 halogen headlight in a classic round shell. Being a no-fairing cruiser, access is direct from behind.

Step 1: Turn the ignition OFF.

Step 2: Locate the headlight shell mounting bolts on the sides of the headlight housing — typically two bolts (10mm or Phillips). Loosen or remove as needed.

Step 3: Disconnect the three-pin H4 electrical connector from the bulb base by pressing the tab and pulling straight out.

Step 4: Remove the rubber dust boot from the headlight housing rear. Pull evenly from all sides.

Step 5: Release the wire retainer clip: press inward, slide away from the bulb tabs, and unhook.

Step 6: Pull the old H4 bulb straight out. Handle only by the metal base.

Step 7: Open the new H4 bulb with nitrile gloves.

Step 8: Insert the new bulb, aligning the offset tab on the base. Push to seat.

Step 9: Reinstall the wire retainer clip — verify it snaps securely.

Step 10: Reinstall the rubber dust boot. Press evenly for a complete seal.

Step 11: Reconnect the electrical connector.

Step 12: Test: ignition ON — verify low beam, then switch to high beam.

Step 13: Reinstall headlight shell and tighten bolts to 1.5-2.0 Nm.

Step 14: Verify beam alignment (see Tips section).

Front Turn Signals (1157NA) — Amber

Step 1: Front turn signals on stalks below the headlight — no fairing.

Step 2: Pull the rubber access grommet at the rear of each housing to expose the socket.

Step 3: Turn the socket counterclockwise and pull it out.

Step 4: Remove the old 1157NA bulb (press in, turn counterclockwise).

Step 5: Install the new 1157NA amber bulb (press in, turn clockwise to lock).

Step 6: Test the signal — verify normal amber flash.

Step 7: Reinsert socket and turn clockwise to lock.

Step 8: Reseat rubber grommet fully.

Rear Turn Signals (1157NA) — Amber

Step 1: Access from behind the rear fender.

Step 2: Pull back the rubber access grommet on each housing.

Step 3: Turn the socket counterclockwise and pull out.

Step 4: Remove old bulb (press in, turn counterclockwise). Install new (press in, turn clockwise).

Step 5: Test. Reinsert socket and lock.

Step 6: Reseat rubber grommets.

Tail / Brake Light (1157) — Dual Contact

Step 1: Locate the tail light on the rear fender below the seat.

Step 2: Remove the two Phillips screws holding the tail light lens to the housing.

Step 3: Pull the lens cover off gently.

Step 4: Turn the 1157 socket counterclockwise and remove it.

Step 5: Remove the old 1157 bulb (push in, turn counterclockwise).

Step 6: Install the new 1157 bulb (push in, turn clockwise). Offset pins ensure correct orientation.

Step 7: Reinsert socket and turn clockwise to lock.

Step 8: Reattach the lens cover and tighten Phillips screws to 1.0-1.5 Nm.

Step 9: Test all: tail (ignition ON), brake (lever and pedal), turn signals.

License Plate Light (194 / W5W / T10)

Step 1: Locate the license plate light on the rear fender above the plate.

Step 2: Remove the screw or pop off the lens cover.

Step 3: Pull the old 194 wedge bulb straight out.

Step 4: Push the new 194 bulb into the socket.

Step 5: Reinstall the lens cover.

Step 6: Verify with ignition ON.

Tips, Warnings & Common Mistakes

Headlight Alignment After Replacement

1. Park the V Star 250 upright on level ground, 25 feet from a flat wall.
2. Measure the headlight center height (approximately 30-32 inches / 76-81 cm).
3. Draw a horizontal reference line at the measured height and a second line 2 inches below.
4. With low beam on, the bright zone top should be at or below the lower line.
5. Adjust via the adjustment screw(s) on the headlight bucket.

LED vs. Halogen — Pros and Cons

LED Note: Given the V Star 250's smaller electrical output, LED upgrades can significantly reduce electrical system load.

Legal Notes & Important Warnings

• All lighting must comply with DOT standards.
• Amber turn signals required.
• LED color above 6000K may fail inspection.
• DC headlight activates with ignition ON.
• The V Star 250's classic cruiser look works well with standard halogen warm white (3200K) — avoid blue-tinted LEDs to maintain the classic aesthetic.

Common Mistakes to Avoid

Verification Notes for 2025 Model Year

The 2025 Yamaha V Star 250 maintains its proven, simple lighting design. Verify against your owner's manual:

To verify all specifications, check your 2025 V Star 250 owner's manual or access it through yamahamotorsports.com.

This guide was prepared using Yamaha OEM service manual specifications and established industry bulb cross-references for the V Star 250 cruiser platform. Always verify against your specific owner's manual before performing maintenance.