"Our Knowledge Section"

Here's what makes a real difference in high amperage electronics. Roll over our circuit board.	Others	Motorcycle dealers have called asking for information about our headlight modulators because their customers keep asking for a modulator. They tell us they really need something better than the brand they'd been getting through a distributor because it kept failing so they'd stopped selling modulators. This is unfortunate but tells us to keep doing what we do because - "We're surely doing something right".
The answer to your question "Do we actually build our own circuit board assembly?" YES and right here in Tucson!

Standard "Quad" Mosfets

We offer quad power control mosfets as standard. Other manufacturers use single mosfets and some offer dual as an option. Our Heavy Duty version has "EIGHT" Mosfet design giving you the highest rating. You get the most rugged circuit when buying Kriss.

Product Information

Don't overlook that Kriss headlight modulators are legal in U.S. (all states)

"ISD" Cool Energy Modulation"© (Here's something you should read)
There's an important design feature that separates a Kriss headlight modulator from others on the market aside from our exclusive "Shade Delay". The program code for our microprocessor sets an "Instant Step Down" (ISD) method of controlling the current flow to the bulb. Our circuit design creates a more crisp and brighter modulation because it doesn't waste current with a heat generating delay like those that slowly throttle down the current flow. It's a characteristic of a mosfet (the switching transistor) to get hot when changing state slowly so we put in the additional engineering to make it work fast. When the filament is at peak temperature our "ISD" sets the bottom level with lighting speed allowing the filament to cool naturally according to the design and material of the filament used in the bulb. An obvious benefit is that the filament is not going to be stressed by operating outside it's metallurgical limits. Our modulators last longer because they run cold and don't create life shortening heat like the others you'll find on the market. Maybe this doesn't make much of a difference in the short run but customers who buy Kriss know it means something when their modulator is still running 10, 15 or 20 years down the road.

Fully integrated (Dual Processors) so you can select modulation of high beam or low beam separately or both high and low together. The two units cross talk so high and low are timed in sequence together when both are operating. If wanted all modulation can be turned off.
The high and low beam circuits on the motorcycle are not combined so you still have integrity of the two original circuits.

"Kriss Shade Delay"© exclusive in Double Eagle Modulators is designed into the operating code so the modulation is not interrupted during those brief moments when you pass under an overpass or behind a shaded area like a large tree, hill or building. Our modulator in the only unit available with a delay for light changes that's an actual time delay in the software code and not an external adjustment to the light sensor. Adjusting the light sensor simply interferes with the normal shut off and turn on times, established by the d.o.t. regulations, which isn't very useful much less functional.
If you prefer not to use the shade delay because you like instant reaction to light it takes just a few seconds to change the program that's being used.

is built into the standard Double Eagle circuit design because it separately modulates each headlight beam and the circuit is independent of the other beam. The Kriss engineering design incorporates the latest technology and should the modulated circuit fail it will usually operate like a normal bulb and simply stop modulating. If some unusually catastrophic event happens like a major short circuit or overload that damaged one of the circuit boards then you always have a separate circuit to the other beam, that's real protection.

Roll Over

Meets d.o.t. regulations so it's legal in the United States, Canada and Australia.
Light detector automatically turns the modulator off at night. It's not legal to operate, even momentarily, at night and we strictly follow the d.o.t. requirements.

No drilling holes in headlight or fairing to install our light detector.
This has been an original feature of Kriss modulators since 1992. Here's why we feel it's not good to drill a hole in your headlight housing to install a light detector. In an effort to be fancy others out there use a sensor that's built into a small metal bezel that's installed in a hole with a fastening nut. This requires drilling a hole. We were the only company with modern type modulators in the early 90's and realized early on that drilling a hole in a chrome headlight housing or other surface violates the integrity of the metal and plating setting it up for inter granular corrosion caused by humidity and seen by the subsequent separation of the plating which migrates out from the hole.
This is often referred to as blistering of the chrome plating. If you look at the picture on the left of the page you'll see that the design of our detector permits mounting it at the front of the bike and attached to a brake hose, or whatever suits your fancy, with a tie wrap or velcro. Our installation instructions explain how and where to place the detector.
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The Kriss Headlight Modulator will not reduce the life of your headlight bulb.
Includes high and low control switches that have a nice appearance and fit well on any upper fairing panel. These switches control the functions of the modulator. You can modulate high or low separately or both together or none if desired. If you have some kind of switch that's a favorite it's simple to use them instead.


One unit operates all four bulbs. It's not necessary to buy two units. It won't fall off like the units that attach directly to the Gold Wing 1800 bulbs and ours can be installed without removing the front fairing.
The latest in miniaturization offers a small, totally solid state, rugged unit that will fit easily under the seat. It's only 1½" x 3" x ¾"
Heavy Duty Version (400 watts) - This option is used primarily with higher wattage bulbs than stock bulbs but works with the lower wattage bulbs and if still using stock bulbs the heavy duty modulator is certainly going to be operating with reduced load requirements on the mosfets. Other modulators you can buy offer dual mosfets for their heavy duty model. This Double Eagle Heavy Duty model offers eight (dual-quad) mosfets. (Heavy Duty model is an additional $30.00)

Knowledge about electronics isn't required but some skills at wiring are necessary.		Unit connection to relay panel under the seat

Note: Kennedy states that their system is not compatible with headlight modulators. Using their cell phone interface generates noise in the headset. The stock Honda and J&M systems don't have this problem.

The Kriss engineering design incorporates the latest technology setting us apart from others by allowing the light to work normally in the event of unit failure.

Check here to see the differences along with the operations of our different programmable brake and signal units.

Watch accident video

Headlight modulators cannot be used on High Intensity Discharge bulbs. (HID uses a ballast to ignite a gas inside the bulb rather than a filament)

Modulation shown is a simulation.
Modulates 240/min. reqd. by d.o.t. (4 times per sec.)