"Our Knowledge Section"

Here's what makes a real difference in high amperage electronics. Roll over our circuit board.	Others	Harley-Davidson 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".

Product Information

Don't overlook that Kriss headlight modulators are legal in U.S. (all states), Canada and now Australia.

	The original plug is removed. The bulb itself is not replaced		Well, I just put mine on my bike. It took just 15 minutes. I don't see how anyone with common sense can't install one of these. Charlie F. - Ultra Classic Gainesville, FL
	Installation is a simple matter of pulling the original plug from the back of the bulb then connecting it to the unit and inserting our plug in its place on the bulb. Our wires are 8 " in length to give you ease and flexibility. Our design of using a plug, rather than the modulator attached directly to the bulb, prevents high levels of heat generated by the bulb from transferring to the unit and shortening life expectancy.

5 3/4" headlight	7" headlight
If you have the small 5 3/4" headlight like that shown on the left please take a look at this page link Click here to read details about the small headlights.

 

"ISD" Cool Energy Modulation"© (Here's something you should read)
There's an important design feature that separates a Kriss modulator from others on the market. 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.

Kriss "Easy TouchWire Programming" © (programming internal code is simple, being accomplished at the unit, by touching a wire to +12 volts and doesn't require any external hardware or computer) gives you the flexibility to change from our shade delay to instant response to any light changes.
"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 quickly under an overpass or behind a shaded area like a large tree. Our delay to light changes is an actual time delay in the software code and not an adjustment to the light sensor. Adjusting the light sensor simply disrupts the effectiveness of the normal shut off and turn on times established by the d.o.t. regulations.
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 modulates only one 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 the circuit board then you always have the stock direct circuit to the other beam which is not connected to the modulator circuit, that's real protection.

Meets d.o.t. regulations so it's legal in the United States, Canada and Australia.
Easy plug in unit. Doesn't require that you cut the wires on your motorcycle.
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.
roll over
Modulates the high beam. Just like all of our modulators it's easy to turn off during the day when it's operating, simply select the other beam or it can be installed so it may be completely turned off.
The Kriss Headlight Modulator will not reduce the life of your headlight bulb.
Fits all Harley models using an H4 type 12 VDC bulb with a three prong plug (except as noted below).
(Vrod uses H7 type, 883 uses Slim-Jim, Fat-Bob dual bulb uses separate model)
The latest in miniaturization offers a small, totally solid state, rugged unit that fits easily most motorcycles. It's only 1½" x 1½" x ¾".
Heavy Duty Version (130 watts) - This option is used primarily with higher wattage bulbs than stock bulbs but still works with the lower wattage bulbs. If using stock bulbs the heavy duty modulator is certainly going to be operating with reduced load requirements on the mosfets to help extend operational life.
(Heavy Duty model is an additional $15.00)

Check here to see the differences along with the operations of our different programmable flashers.

Headlight modulators cannot be used on HID (High Intensity Discharge) bulbs.

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