Denali Wiring Adapter For H4 To H9 / H11 Harness For Harley The Denali H9/H11 to H4 headlight wiring adapter enables a seamless connection for M5 or M7 LED headlight modules to the OEM connectors found in motorcycles equipped with an H9 and H11 split LED headlight. This plug and play solution ensures a straightforward installation process, facilitating an upgrade to enhanced lighting performance without the need for extensive modifications. Features: Plug & play adapter Converts H9/H11 connectors into female H4 plug Permits quick connection of Denali M5 or M7 LED headlight module without modifying the factory wiring harness