Product Category

MotoCycle: Dual Output (H4)

PART #: 1 x H181



Facts & Figures


Power Delivery: The MotoCycle relay harness is designed to deliver steady voltage to your HID system directly from the bike's battery. Factory headlight outputs are really only designed to power a halogen light bulb and with the not-so-stable electrical systems on motorcycles - that could mean bad news for the longevity of your upgraded headlights without a harness.

One of a Kind: The Morimoto H4 Dual-Output Motorcycle specific harness is the first and only high-quality harness on the market that's designed for retrofitting HID's into the headlights on motorcycles. It's been a staple in our product line for years as the right go-to for the job.

In Comparison: To any other harness we offer, the MotoCycle spec's wire lengths are ideal for the layout on a motorcycle. It is not designed for a car's engine bay and has to be modified or rigged to work on a bike - this one should be ready to go out of the box. You can checkout this video. to get an idea how it hooks up.

Light Up: Each harness will power two HID ballasts and two high beams from one input trigger. Perfect for retrofitting a pair of hi/lo Bi-xenon projectors or HIDs in your bike's two reflectors.

Work of Art: Aside from being a technical masterpiece that works like a charm, it's also a work of art. With its braided TechFlex insulation and sleek-looking black anodized relay - it will surely look factory-fresh when routed through your fairings.

Trusted: For more than a decade, we've worked hard to earn our killer reputation. Car guys world-wide know that TRS carries the internet's best selection of high performance automotive and powersport lighting products at the best prices, and we've got the best, most knowledgeable team of real enthusiasts to help back it up. If we sell it, then you bet we've put it to the test on our own cars, trucks, and bikes. Need a recommendation on parts for your project? Got a tech question? Wholesale inquiry? Contact Us

What's included


1x MotoCycle H4 Dual Output Bi-Xenon Harness



H4 (Low/High Beam)


:12V Standard

HID Systems:

35-55w Low/High Capable HID/Projectors

Time Delay:




1x H4 Male


4x 9006 Female (2x Ballasts,2x High Beams)

12V Power:

1x Nickel-Plated Ring Terminal


2x Nickel-Plated Ring Terminals


Inline 25A

Time Delay: