Auxbeam C20 CANBUS Decoder-Pro – LED Headlight Error Canceller (Pair)

Fix Flicker • Stop Dash Errors • Stabilise LED Headlights

Upgrading to LED headlights is one of the best improvements you can make to your vehicle – but some cars aren’t too happy about it. Flickering, bulb-out warnings, DRLs shutting off, or random cut-outs while driving are all common symptoms of sensitive CANBUS systems.

The Auxbeam C20 Decoder-Pro is designed to solve exactly that. It stabilises current, prevents error messages, and keeps your LEDs performing reliably – especially on vehicles with stricter electrical systems.

Simply choose the correct socket type (H7, H11, HB3, HB4, 9012, etc.) and plug them in. No wiring, no coding, no hassle.

What It Fixes

• Dashboard bulb-out warnings
• LED flickering or strobing
• DRLs turning off unexpectedly
• Headlights randomly shutting off
• Radio interference caused by LED conversion
• Voltage sensitivity on modern ECUs

Whether you’re running projector or reflector housings, the C20 Decoder-Pro helps ensure your LEDs work the way they should.

Key Features

Advanced CANBUS Error Cancelling

Designed to stabilise voltage and communicate correctly with vehicle ECUs—ideal for vehicles that are more sensitive to LED upgrades.

Flicker-Free LED Operation

Upgraded resistors, capacitors, and a smart IC maintain a consistent current flow to your bulbs.

Reduces Radio Noise & Interference

Helps prevent LED electrical noise from affecting FM/DAB reception.

High-Quality Construction

• 6063 aluminium housing for durability and heat control
• High-temp nylon cabling
• Integrated smart IC
• Tough, OEM-style connectors

Built to last, even in harsh engine bay conditions.

Plug & Play Installation

Just connect the decoder inline between your LED bulbs and your vehicle’s factory harness.
No modifications or coding required.

Note: Some socket types (e.g., H7, HB3/HB4, 9005/9006/9012) may be polarity-sensitive. Check the “+” and “–” markings before fitting.

Important Notes

Modern vehicles vary in how strict their CANBUS systems are. The C20 Decoder-Pro significantly improves compatibility, but no decoder can guarantee 100% compatibility with every vehicle.

If you’re unsure which fitment you need, get in touch and we’ll point you in the right direction.

Specifications

• Voltage: 12–16V
• Current: 5A @ 13.5V
• Power: 12W
• Operating Temp: –40°C to +85°C
• Quantity: 2x Decoders (1 pair)

Available Fitments (Select Above)

• H4 / 9003 – GD002032
• H7 – GD002030
• H11 / H8 / H9 – GD002031
• HB3 / 9005 – GD002029
• HB4 / 9006 – GD002029
• 9012 / HIR2 – GD002029
• 9007 – GD002034
• 9004 – GD002034
• H13 / 9008 – GD002033

(Not all customers will need a decoder—this varies by vehicle and LED bulb type.)