Info - headlights & "relays"

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Solid-State "Relay" Kit | All-In-One Headlight Modulator & Solid-State "Relay" Kit

Important info about headlights & "relays"

Light output and voltage. Typically on a stock motorcycle the current powering the headlight, auxiliary lights, horn, and accessories flows through many undersized wires and small connections. The result is power loss or voltage drop before reaching the intended device. The headlight is dimmer due to the full battery voltage not reaching it. This voltage drop can be 1-2 volts on new or like new bikes. This light output loss can be significant.

Why use a solid-state "relay" to control your headlight? A solid-state relay is a very low powered remote controlled switch. It allows the high current to pass through it from the battery directly to the headlight with negligible voltage drop about 0.1 volt. The current required to remotely control a solid-state relay is about 0.00003 amps while a power hungry mechanical relay requires about 0.3 amps or 10,000 times greater current than a solid-state relay. A solid-state relay has lighting fast switching and it does not degrade from electrical arcing or mechanical wear - no clicking sounds.

Switchgear may last forever. Your bike's switchgear now supplies milliamps or less to control the solid-state relays instead of the many amps to the headlight before. Switchgear is expensive to replace.

Increased safety. Solid-state relays deliver near full battery voltage to the headlight giving greater light output. You're more visible to others and you can better see things in front.

Headlight heat problems. High wattage bulbs can significantly increase safety and require special use care to avoid damaging bike parts. Extreme heat can build up in the headlight housing damaging parts so adequate ventilation is important. Also, the bike's stock wiring will conduct more current heating up trying to supply the required power to the headlight without a solid-state "relay" installed.

Disclaimer: The infrmxxxation is subject to change and is our best effort to be accurate. We're human so mistakes are possible. Let us know should you find an error.

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