Pathfinder EMI Noise Filter - FOR H4 Bulbs

Pathfinder EMI noise filter for H4 LED headlight conversions on V-twin motorcycles. Eliminates static interference and CAN-bus error codes that occur when upgrading from halogen to LED bulbs, with plug-and-play inline installation.

Features

• Reduces static caused by LED headlight upgrades
• Helps eliminate CAN-bus error codes
• Plug-and-play inline installation
• No soldering or wiring modifications needed

Specifications

• Brand: Pathfinder
• Manufacturer Part #: H04EMI
• Length: 2.5 in
• Width: 5.25 in
• Height: 8.25 in
• Weight: 0.31 lbs
• Country of Origin: China (Mainland)

Fitment

Fits V-twin motorcycles using H4 LED headlight bulbs, particularly Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

Will this eliminate all check-engine lights from an LED headlight swap?

It helps eliminate most CAN-bus error codes. Some models may require additional tuning depending on the bike's electrical architecture.

Do I need to solder or splice any wires?

No — this is a plug-and-play filter that installs inline between your LED bulb connector and the factory harness.

What's the difference between static noise and CAN-bus errors?

Static causes radio interference and speaker noise; CAN-bus errors are fault codes the bike's computer registers. This filter addresses both.

Will this work with any LED H4 bulb?

Yes — it's compatible with any aftermarket LED H4 bulb as long as your motorcycle uses an H4 connector.