Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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America's Oldest Speed Shop ®


Headlight Relay Harness Kit

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Headlight Relay Harness Kit
Headlight Relay Harness Kit
Headlight Relay Harness Kit

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Please NOTE the following about this product:

  • This item is sold as a kit.



Q & A

What's in the Box

  • Sealed beam, halogen or H4
  • Brighter headlights
  • Works with any of our headlights
  • Harness provides a maximum length of 7'3" between the headlights

Instructions (PDF)


This harness is designed to work on vehicles that have a total of two (three prong) headlights, where each of the two headlights function as both a high and low beam.  If you intend to use this harness on a vehicle that has seperate bulbs for low and high beams (like a 69 Chevelle), modification to this harness is required which is not detailed in the included instruction sheet.