LED Tail Light WOW Kit! KLR650 (1987-2018)

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Transform your KLR650 to the safest bike on the block!

Happy Trails Products

The distance of a lifetime click for an article that might just save your life! Summary: Light Emitting Diodes (LEDs) illuminate 200 milliseconds faster than incandescent bulbs. For a motor vehicle this means a faster braking distance response time, about a full car length of extra stopping distance at 65 MPH.

Don't be deceived by its looks. It may be a bit homely but this ugly duckling is a superstar. The exclusive Happy Trails WOW LED Taillight System transforms your KLR650 to the safest bike on the block. It is routinely blinding: during testing staff members grew accustomed to being temporarily blinded (like looking at a camera flash). We kid you not! Both lights are brilliant, both the taillight and the brake light are exponentially improved to a startling degree. The light installs in seconds: unscrew the stock bulb screw in the adapter unit; the board mounts securely underneath the taillight lens cover. The WOW LED taillight system uses less power, is far brighter (both tail and brake), and is rated to last over 100,000 hours with no signal degradation.

Fitment: fits all Kawasaki KLR650 (A or E series); not the GEN3
Power usage comparison (14VDC engine running): Taillight: Stock 1157: 5 Watts vs WOW LED GEN II: 0.1 Amps/1.4 Watts 10 Candela taillight
Brake Light: Stock 1157: 21 Watts vs WOW LED GEN II: .7 Amps/10 Watts 100 Candela brake light (Light brightness testing carried out using a Minolta T-10 light meter at 1 foot).

Flash Pattern: The brake light comes with a built-in dip switch toggle to activate a 1.5-2 second (4 flash) alert flashing before a brilliant steady brake beam or a brilliant steady beam (without flashes). There is a plastic film over the dip switch, the best way to access the switches is to use tweezers to lift a corner, then use the tweezers to move the switch positions, and then lay the film back down.

Notes: Full brightness is not realized unless the bike is running and producing the full normal 14V. To disable the flashing mode slide both switches to the "off" position (switches are tiny toggles on the circuit board.) If your installation causes a small gap between the tail-light lens and gasket, remove a small amount ( about 1/16") of material from the taillight mounting posts with a small file or rotary tool. This will let the lens seal tight and keep water out. The brake light circuit on the WOW taillight requires an active and working taillight to function. Consequently, if you have a headlight cut-off switch that also eliminates the taillight the brake light will not work. Also, the WOW taillight cannot be bench-tested. It must be installed so that both the tail and brake light circuits are active.

Dimensions: The light is about 1 1/4" deep, from the top of the mounting posts to the back side of the circuit board. The circuit board is 1 5/8" wide, and 2 5/8" wide. The maximum width on the installation holes is 3 1/4 while the minimum width is 2 7/8".


Additional Technical Details: on Happy Trails' Wiki

All Happy Trails products are crafted in Idaho

Install Instructions



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Manufacturer SKU AER70-0001-2
California Restricted Product: No
Manufacturer: Happy Trails Products
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  • i just re-installed both rear turn signals when i turn on either signal the brake light flashes in time with the signal, replaced with another LED bulb and there's no flash from the brake/tail light.the turn signal works fine. i've had this board for a few years with no problems. can you help? thanks for your time.
    Question by: ROGER PAYNE on 2017-12-01 04:03:00

    Why did you reinstall both rear turn signals? The issue would be something there. Did you put LED bulbs win the turn signals?

    It could be a ground issue.

    Answer by: Tim on 2017-11-30 23:03:00
  • Installed unit flashed like I gues it was supposed to, would never turn off from "break" light! Can only go in one way, so what's up?
    Question by: William Manes on 2017-10-06 03:18:00

    Give us a call 800-444-8770

    Answer by: Tim on 2017-10-05 23:18:00
  • Can this be used on a 2013 Suzuki DR200SE? If not, what is recommended?
    Question by: Mike on 2016-12-15 03:02:00

    The Wow taillight is only for the KLR.

    We don't have an option for the DR200

    Answer by: Tim on 2016-12-14 22:02:00
  • Will this LED tail light module work with the "GearBrake" Smart Brake Light Module?
    Question by: Steve on 2016-07-27 00:32:00

    If the Gear Brake activates a standard bulb it will activate the LED.

    Answer by: Tim on 2016-07-26 20:32:00
  • I installed the LED tail light I just received onto my KLR 650 and it worked great for one ride. After I got home from about a 45 minute ride I noticed the tail light no longer worked. The LED unit was very dim and no longer blinked. I tested my bike by reinstalling my stock bulb and it worked fine, which leads me to believe something is wrong with the LED unit. How can I go about exchanging it for a replacement?
    Question by: Tim on 2016-04-13 00:24:00

    The bike must be running for the LED to be at the bright function.  Please recheck with the bike running and let me know the status.

    Answer by: Tim on 2016-04-12 20:24:00