Skip to content Skip to footer

H-4 Headlight Relay Conversion Harness Part No 30815


#30816 – For 9004 and 9007 halogen bulbs

#30817– For 9005 and 9006 halogen bulbs

Painless Part Number: 30815 Category: Tags: , , , , , Product ID: 20908


This kit includes:

  • Two 40 Amp weatherproof relays
  • Two weatherproof relay bases with wiring harness
  • Weatherproof 30 Amp fuse (capable of handling up to 150 Watts)
  • Mating connectors to factory headlights and harness

Designed for H-4 halogens headlights to get maximum power from your headlights, it is recommended to have the shortest possible distance between the power source and the bulbs. Our headlight harness draws power directly from the battery, through a relay, to the headlights, providing full power to your H4 conversion headlights or halogen sealed beams. It can also be used to relocate head lamps to a remote location.


There are no reviews yet.

Be the first to review “H-4 Headlight Relay Conversion Harness Part No 30815”

Make It Easy.
Make It Painless.


2501 Ludelle St
Fort Worth, Texas 76105

Tech Support

Central Time Zone (CST)

Monday-Thursday 8AM to 5PM

Friday 8AM to 4:30PM 



Red Goat Marketing © 2024. All Rights Reserved.