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H4 HEADLIGHT WIRING HARNESS UPGRADE

H4 Headlight Relay Upgrade Wiring Harness (DIY-H4HLRH)

H4 Upgraded Headlight Harness - K Suspension
H4 Wiring Harness Upgrade for any vehicle with the H4 light plug Increase your OEM lighting output by a minimum of 50% (usually more)Save your light switch from burning up like they always doTake the load off the system and wire your lights directly to the battery!Plug 'n Play designNo wiring needed Watch our video below for some guidance on how the install will go!
H4 Headlight Relay Upgrade Wiring Harness (DIY-H4HLRH)
Samurai and Toyota Pickup Specific Headlight Harness - H4 LED Compatible . If you are upgrading your Samurai and Toyota Pickup headlights to high output H4 bulbs or H4 LED you will need a conversion harness built just for this purpose. High output bulbs require a relay style harness to deliver the necessary power.93%(4)
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