H4 HEADLIGHT 2 HEAD LAMP RELAY SOCKET PLUG WIRING HARNESS FIX DIM LIGHTS For Sale - New and Used

We also offer expedited options for additional charge depending on the item, you can review the expedited options at checkout based on your delivery address. 

Your order will be dispatched within 1 working day of receiving payment (Monday-Friday).

If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one, be it similar or not. 15% Restocking fees apply on all orders returned. 

You can return a product for up to 30 days from the date you purchased it.

Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. If the item is found to be in used condition, refund will be rejected and a case will be opened with . 

• ONE SET H4 - 2 HEADLIGHT CERAMIC H4 HEADLIGHT RELAY WIRING HARNESS FOR 2 HEADLAMPS LIGHT BULB SOCKET PLUGS 7x6   
• This is a 7x6" Halogen H4 Headlight Relay Harness with Hi Heat Ceramic Plugs for Cars & Trucks with 2 Headlights - HI and LOW Beams.  
• If you are upgrading to Halogen Bulbs or are having trouble with your 7"6" headlights not working properly, this is your fix!!  
• This harness fixes:  
  • Dim Headlights
  • Back Feeding Power
  • Flickering Headlights
  • Malfunctioning Headlights when using Hi/Low Beams
  • Overloading the Headlight Switch Overheating Plugs 
• THIS IS A H4/9003 12V HEADLIGHT CONVERSION WIRING HARNESS WITH HI HEAT CERAMIC PLUGS FOR CARS THAT HAVE UPGRADED HALOGEN OR XENON H4 BULBS. THE STOCK HEADLIGHT SWITCH CANNOT HANDLE THE NECESSARY POWER NEEDED TO LIGHT THE HI WATT HALOGEN BULBS SO HEADLIGHTS OVERLOAD THE HEADLIGHT SWITCH AND END UP MAKING THE LIGHTS DIM, FLICKER, OR TURN OFF. THIS HARNESS BYPASSES THE POWER DRAW FROM THE HEADLIGHT SWITCH AND PULLS THE POWER DIRECTLY FROM THE CARS BATTERY, BUT STILL USES THE STOCK HEADLIGHT SWITCH TO ACTIVATE THE RELAYS TO TURN THE HEADLIGHTS ON AND OFF. THE CERAMIC PLUGS WONT MELT LIKE STANDARD PLASTIC PLUGS WILL FROM THE HIGHER HEAT THAT HALOGEN BULBS PUT OUT. THIS IS HARNESS IS A DIRECT PLUG AND PLAY WITH ALL THE CORRECT FACTORY STYLE PLUGS FOR THE HIGH AND LOW BEAM HEADLIGHTS!  
• Manufacturer Cross Reference H4 2
• HEADLIGHT HARNESS FOR HEADLIGHT INTERCHANGE H4 CONVERSIONS H6054 HEADLIGHTS 6052 HEADLIGHTS
• Meets DOT / SAE Requirements
• FREE SHIPPING in the U.S.  

Why Choose Us? 

All Star Truck Parts is a Family Owned and Operated Texas-based supplier of 

premium truck and trailer lighting, reflective and wiring over 20 year in the industry and 1,000,000+ drivers served- our mission is simple: keep truckers safe, legal, and rolling. 

We also offer expedited options for additional charge depending on the item, you can review the expedited options at checkout based on your delivery address. 

Your order will be dispatched within 1 working day of receiving payment (Monday-Friday).

If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange the product for another one, be it similar or not. 15% Restocking fees apply on all orders returned. 

You can return a product for up to 30 days from the date you purchased it.

Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. If the item is found to be in used condition, refund will be rejected and a case will be opened with . 

• Dim Headlights
• Back Feeding Power
• Flickering Headlights
• Malfunctioning Headlights when using Hi/Low Beams
• Overloading the Headlight Switch Overheating Plugs