H4 to 9008 (H13) Headlight Heavy Duty Wiring Harness Conversion!
- Easy to install, this wiring harness will supply battery voltage or more to your headlights.
- This extra voltage will give you brighter, whiter headlights.
- Simple plug and play installation using factory style (H4 Harness side to 9008/H13 Headlight side) connectors.
- These are equipped with 2 heavy duty relays and a fusible link for safety!
- Will NOT work with Daytime Running Lights!
- Relays are available from NAPA Part# AR350, or we have them in stock here