LED Instrument Gauge Bulbs (5-Pack) | Honda CB175 / CB200 / CB350 / CB360 / CB450 / CB500 / CB550 / CB750
Your vintage Honda has more instrument gauge bulbs than you might expect — and after 50 years, at least one is probably burned out. These LED replacements drop right into the original sockets, draw less than half the power of the stock incandescent bulbs, and run noticeably cooler.
Why You Need This
Each Honda twin uses a handful of small 12V/3W bulbs inside the speedometer and tachometer housings. Two bulbs backlight each gauge face, while individual bulbs power the neutral indicator (left side of the tachometer), turn signal indicator (right side of the tachometer), and high beam indicator. After decades of heat and vibration, corroded sockets and burned-out filaments are extremely common — dim or dead gauges are one of the first things riders notice on a newly acquired bike.
These LED replacements operate at 12V/1W instead of the stock 12V/3W, cutting power draw by more than half. Less current through the gauge circuit means less heat in the instrument housings and reduced load on your charging system — a meaningful improvement on these small-output vintage alternators.
Specifications
| Spec | Detail |
|---|
| Replaces OEM Part | 34902-259-000 |
| Type | LED (replaces stock incandescent) |
| Voltage / Wattage | 12V / 1W (stock: 12V / 3W) |
| Sold As | Pack of 5 |
| Fits Models | CB175 (1968–1973), CL175 (1968–1973), SL175 (1970–1972), CB200 (1973–1976), CL200 (1974), CB350 (1968–1973), CL350 (1968–1973), SL350 (1969–1973), CB360 (1974–1976), CL360 (1974–1975), CJ360 (1976–1977), CB450 (1965–1974), CL450 (1967–1974), CB500T (1975–1976), CB500K (1971–1973), CB550K (1974–1978), CB550F (1975–1977), CB750 (1969–1978) |
Note: If this is your first time switching to LED indicator bulbs, you will need the LED Indicator Diode for the turn signal indicator in your gauge cluster to function properly. Incandescent bulbs work regardless of current direction, but LEDs require correct polarity — the diode ensures your single turn signal indicator flashes correctly for both left and right turns. You will also need an electronic flasher relay — the stock thermal flasher often will not trigger correctly with LED loads.
Installation
Difficulty: Beginner
- Remove the gauge housings from the top triple tree to access the bulb sockets on the back of each gauge.
- Twist each socket counterclockwise to remove it from the gauge housing.
- Pull out the old incandescent bulb and push the new LED bulb into the socket.
- Reinstall the socket into the gauge housing and test with the ignition on.
Installation tip: Clean each bulb socket with steel wool or a scotch brite pad before installing — these sockets are prone to corrosion after decades, and a poor connection will cause flickering or no light at all. Apply a dab of white grease to the bulb base before seating it to prevent the bulb from seizing in the socket over time. Keep a few spare bulbs in your parts stash.
Frequently Asked Questions
How many gauge bulbs does my bike use?
Most Honda twins use two bulbs per gauge face (speedometer and tachometer backlighting) plus one bulb each for the neutral indicator, turn signal indicator, and high beam indicator — seven bulbs total. A 5-pack covers the most commonly burned-out positions, and you can pick up a second pack to replace them all at once.
Do I need anything else to switch from incandescent to LED gauge bulbs?
For the speedometer and tachometer backlighting and the neutral and high beam indicators, the LED bulbs drop straight in — no extra parts needed. For the turn signal indicator, you will need the LED Indicator Diode and an electronic flasher relay. The diode resolves a polarity issue unique to LED bulbs in the single-indicator gauge design, and the electronic flasher provides the low-threshold trigger that LED bulbs require.
Will these work with my stock 6V system?
No. These are 12V LED bulbs and will not work on 6V systems (CT90 K0-K1, early CB160, etc.). For 6V bikes, use the incandescent gauge bulbs which are available in both 6V and 12V.
Can I use LED gauge bulbs with my stock incandescent turn signals?
Yes. The gauge cluster bulbs and the external turn signal bulbs are on separate circuits. You can upgrade just the gauge bulbs to LED without changing anything else — as long as the turn signal indicator bulb in the gauge cluster is also LED, you will need the diode. If you keep the turn signal indicator as incandescent, no diode is needed for that specific bulb.
You Might Also Need
Last updated: March 2026
