Reenmachine :: Modern Lighting :: H4 Halogen Headlights & Wiring Harnesses :: High Power Relay Headlight Harness, 4-Light H4 System - The website for reenmachine Incorporated, builders of exotic custom vintage Ford Mustangs with a high-tech hot rod influence. Also: reenmachine, reen, mustang, restomod, resto-mod, retromod, retro-mod, technomod, techno-mod, hotrod, hot-rod, hot rod, custom, shelby, clone, replica, modified, gt350, gt 350, gt-350, gt500, gt 500, gt-500, bruiser, cobra, DOHC, SVT, IRS, independent front suspension, independent rear suspension, mustang II, 4.6 mustang, 4.6L, restomod forum, mustang forum, classic, built, car, 1967, KAR, reen machine, machine, custom hotrods, magazine, pro 7, pro 7 racing, pro7, scca racing, nasa racing, scca, nasa, mazda rx7, mazda rx 7, 1st generation mazda rx7, 1st generation mazda rx 7, 1st generation rx7, 1st generation rx 7, lincoln, mercury, merc, pontiac, buick, studebaker, cadillac, GM, chrysler, jeep, humvee, tudor, sedan, convertible, chopped, hemi, coupe, roadster, camaro, corvette, impala, nova, gto, 32, 39, 56, 57, 69, 67, 64 1/2, 65, 66, 1932, 1964, 1965, 1966, 1968, 1969, 2005, wheels, bodies, chassis, service, performance, fabrication, appraisals, louvering, upholstery, treet rod, street rods, hotrod, hotrods, racing, apparel, clothing, t-shirts, tshirts, decals, patches, parts, accessories, racing, automotive, automobile, car, hotrods, harleys, hot rods, streetrods, street rods, racecar, race car, mooneyes, joe racer, big johonson, clay smith, ed roth, rat fink, memorabilia, dragracing , bonneville, nhra, formula one, formula 1, speed, nascar, nsra, goodguys, dragstrip, wescott, ceramic coating, t-shirt, jackets, apparel, chevrolet, corvette, chrysler, dodge, ford, mopar, chevelle, nova, tracks, building a race car, amatuer racing, car painter, upcoming events, scca upcoming events, nasa upcoming events, mazda, 1st generation mazda, rx7, rx 7, reen machine, reen, peter, peter waydo, christa, christa hastie, split films, split interactive, split, waydo, hastie, reen machine racing, web design los angeles, web site design los angeles, website design, how to build, sevens only, 7's only, buttonwillow, willow springs, reenmachine.com, www.reenmachine.com, reenmachine, enthusiast, touring, z car, nissan z car, z-car, nissan z-car, carbon fiber, accessories, parts, 350z, 350 z, 350 z car, fairlady z, nissan 350z, vintage, autos, cars, trucks, hot, rod, rods, restoration, turn-key, builders, customizing, plastic media blasting, shows, car, parts, custom, painting, pinstriping, flames, trucks, muscle, cars, racing, links, street, ford, chevrolet, blower, manifold, exhaust, engine, tranmission, classified, customize, artAlden Shocks, Big Al's, American Racing Wheels, Art Morrison Chassis, Ball' Rod and Custom, Survivor, Pearl Islands, 7, S7, Boese Engineering, Cal Car Cover, Classic Instruments, Clay Smith Cams and Apparel, Dakota Digital, Direct Sheet Metal, Flaming River, James Durant Springs, Dutchman Motor Sports, Earl's Performance Products, Finishline Coatings, Halibrand, Haneline, Heidt's, Hercules Motor Car, Hotronics

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High Power Relay Headlight Harness, 4-Light H4 System

To get maximum power from halogen headlights, it is recommended to have the shortest possible distance between the power source and the bulbs. Your classic's factory wiring is not designed to handle high power halogen headlights, especially when upgrading to higher wattage. Running the power through the headlight switch is an even worse situation -- resistance in small gauge wire or in the switch will lower the output at the lamp and can cause overheating of the wires. It is very common for the circuit breaker in the headlight switch to turn your lights off at random times. Be safe! This headlight harness draws power directly from the battery, through relays, to your halogen H-4 headlights. This harness is made with the very best high-temp chemical resistant wire, a weather resistant 30-amp fuse, and two 50-amp weather resistant relays capable of handling high-power lights with lots of margin.

Made to power four headlight bulbs -- two HI/LO and two HI beam. When you have your HI beams on, all four lights are illuminated.

Installation is a snap: mount the relays with the included screws, run the pre-harnessed wires to each headlight and one of the old headlight plugs, and plug in your H4 lights just as you would a normal bulb. Hook up a ground wire and a power wire and you're done! Of course the kit comes with complete illustrated instructions and phone or email support is always available.