The RLC3 is the heart of your Q5 Pro system — a compact, weatherproof handlebar controller that turns a single thumb movement into precise light control. This guide shows you every button, dial, and LED glow, explains what each signal means, and walks you through the seven functions that make RLC3 unique. Ready in under ten minutes, beginner-friendly, no apps or menus needed — just you, your bike, and the road.
Three physical elements. That's the whole device.
| Element | What It Is |
|---|---|
| The Dial | Aluminum knob. Rotates infinitely. Clicks inward as a button. |
| The Aux Key | Side-mounted button for instant max beam and hazard mode. One press, full power. |
| The Signal Ring | Illuminated ring that shifts color to show system status. |
No app. No screen. No menus. Just tactile hardware built to be operated without looking.
Press the dial to turn on. Press again to turn off.
The Signal Ring wakes with your last-used brightness — no re-dialing every ride.
💡 Rider Tip — Brightness setting persists across power cycles and battery disconnects.
Rotate clockwise → brighter. Counterclockwise → dimmer.
No steps. No clicks. No fixed levels. Just continuous analog control from off to full 22,000 lumens.
Why it matters: Most controllers force you into 3–4 fixed levels. The road doesn't work that way. The RLC3 lets you land exactly where you need — anywhere between minimum and maximum.
💡 Rider Tip — The dial rotates infinitely. No start point, no end. Adjust without ever glancing down.
The feature you won't find on any other auxiliary light controller.
As you rotate the dial, the LED ring shifts through a continuous gradient — deep green at minimum, luminous blue at maximum, every color between representing your exact dial position.
Why it matters: Numbers require you to look. Colors don't.
Your brightness setting lives in your peripheral vision, on your handlebar, at all times. A glance is all you need — the kind you already give your speedometer.
Signal Ring Color Reference:
| Color | Brightness | Best For | |
|---|---|---|---|
| 🟢 | Deep Green | Minimum | Economy mode |
| 🟢🔵 | Green-Cyan | Low | City commute |
| 🔵 | Cyan | Mid | Country roads |
| 🔵🟣 | Cyan-Blue | High | Highway |
| 🔵 | Luminous Blue | Maximum | Dark backroads at speed |
💡 Rider Tip — Give yourself one ride to learn the gradient. After that, your brain reads it automatically.
Press the Aux Key to toggle between white beam and yellow DRL.
💡 Rider Tip — Yellow DRL dramatically improves daylight visibility at intersections and roundabouts.
Need a Brighter Yellow Beam?
Add the optional Yellow Lens Cover. Converts the full 4-stage white beam into high-intensity yellow — ideal for fog, rain, and low visibility.
Long-press the Aux Key (2 seconds) → flash pattern begins.
Repeat long-press → cycle through alternate patterns. Short press → exit.
Use it for:
💡 Rider Tip — Practice entering and exiting Hazard Mode in your driveway before you need it on the road.
Once wired, your Q5 Pro follows your factory high beam automatically.
Engage high beam → Q5 Pro turns on. Return to low beam → Q5 Pro turns off. No extra button. No extra thought.
💡 Rider Tip — You can still override manually. Press the dial to switch off during a high-beam moment (like passing a cyclist).
Once wired, hold your horn for 0.5 seconds or longer → Q5 Pro strobes.
Audio + visual alert in a single instinctive input. For the moments when being heard isn't enough.
Use it when:
Requires wiring during installation · Quick horn taps still function as a normal horn.
💡 Rider Tip — Half-second threshold prevents accidental strobing at toll booths and parking lots.
Bookmark this. After a week you won't need it — but the first week matters.
| Action | Input | Result |
|---|---|---|
| Power on/off | Press dial | Lights on/off · Signal Ring wakes |
| Adjust brightness | Rotate dial | Continuous dimming · color shifts |
| Toggle White ↔ Yellow | Press Aux Key | Beam mode switches |
| Enter Hazard | Long-press Aux Key (2s) | Flash pattern begins |
| Change flash pattern | Repeat long-press | Next pattern |
| Exit Hazard | Short-press Aux Key | Returns to steady output |
| High-Beam Sync | Automatic (once wired) | Follows factory high beam |
| Horn Strobe | Hold horn 0.5s+ (once wired) | Strobe activates |
Powered on:
Green → dim · Cyan → mid · Blue → bright
Hazard Mode:
Signal Ring pulses in rhythm with flash pattern
Something wrong:
Rapid amber flash → wiring or system fault. [Troubleshooting Guide →]
Why no screen or app?
Because motorcycles don't have room for another distraction. Touch and peripheral vision only.
Can I remap buttons?
No. Fixed mapping guarantees consistent muscle memory across every rider and ride.
What happens when I lose power?
System defaults to off. On restart, RLC3 restores your last-used brightness and beam mode.
Is it waterproof?
Yes. Sealed for rain, high-pressure washing, and long-distance abuse.
What about BMW Wonder Wheel integration?
For that, use the RLC CAN-X — plugs directly into the BMW CAN bus. [Learn More →]
Every choice — the infinite dial, the color gradient, the tactile aux key — exists to keep your attention on the road, not on the hardware.
Master these seven functions once. The RLC3 disappears into your riding instincts.
That's the whole point.
