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Rotary LED Dimmer with High Beam Bypass


Product Description

Provides rotary knob to control led output.

  • Dimming is accomplished by PWM.  This reduces electrical load and is much more efficient than traditional resistance type dimming.
  • Off position. Knob has a detent "click type" off.  Counter clock wise rotation decreases light output until "click" or off position.
  • High Beam bypass - Connect to your high beam positive wire (or 12v +) to provide full light output when you turn on the high beams. Not required for dimmer operation.  Lights go to full power when 12v positive applied, even if rotary knob is in off position. Will not work with oem led headlights unless the headlight uses 12vdc.


  • Rotary dimmer
  • 1 meter/ 3' wire lead for high beam trigger.
  • Posi-tap connector for convenient connection to high beam positive wire.



  • 1.5"x1.3"x.8" or 38mmx33mmx20.3mm
  • IP67 dust and waterproof
  • Suitable for up to 6 amps or 72 watts.


Caution - not all lights are dimmable, check with your light manufacturer.


Warranty Information

1 year when used with ADVmonster lights.

Product Reviews

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Showing reviews 1-10 of 13 | Next

  1. Small Compact & Effective 4 Star Review

    Posted by on 22nd Aug 2020

    The dimmer is easy to install. My only challenge was finding the 12v + wire to tap into. I like the compact size and the "plug & play" connections provided. Have only had it installed for a few weeks, but looks good.

  2. Rotary dimmer switch 5 Star Review

    Posted by on 10th Jun 2020

    I Purchased the rotary dimmer switch to go along with the model 30 lights. I mounted them to the fork fender bolts on a Yamaha FJR 1300. I mounted the dimmer switch on the left side of the dash panel.
    All works perfectly. I like that I could wire to my highbeam switch so that the accessory lights will go to full power anytime my highbeams are on. When I switch to low beam, the accessory lights go to the brightness I preselected with the dimmer switch.

    My only recommendation would be for the wires to be insulated as a bundle upon leaving the housing of the rotary dimmer switch. This would make for a more finished appearance. I was able to do A pretty good job on my own by wrapping with some electrical tape and then coating with liquid electrical tape.
    Overall very happy with the purchase.

  3. Outstanding Customer service! 5 Star Review

    Posted by on 14th May 2020

    I was given great advice and clarification as to which products work well together. The lights Model 55 and the dimmer really work well together. My Capo has never been seen so well anytime of day or night. I was afforded a free gift that was unexpected just for my business. I've got nothing but good remarks for this company. Will buy from again.

  4. Worked as described 4 Star Review

    Posted by on 28th Mar 2019

    Product worked very well as described.

  5. perfect dimmer for 55 led kit 5 Star Review

    Posted by on 21st Dec 2017

    I use a low dim setting all the time on road, and it doesn’t blind people, and have it wired to go to highest setting when using high beam: it lights up the world! GreT product!

  6. No need to re-aim your "super powerful" Aux lighting 5 Star Review

    Posted by on 19th Nov 2017

    I constantly read threads where folks buy very expensive and powerful Aux lighting for their motorcycles and then state "All I did was aim them low to keep from blinding oncoming traffic" Insert sound of crickets here.......
    This switch eliminates that. Aim them where you need them and use the switch. High beam override is amazing when lights are aimed properly.

  7. Great service 4 Star Review

    Posted by on 9th Oct 2017

    Made contact first call and sorted my problem. Ordered online and delivery was quick.
    I would have given 5 stars but it think the dimmer could be less sensitive from dim to full bright.
    Regardless the product was easy to connect and it works.

  8. dimmer and high beam bypass 4 Star Review

    Posted by on 6th Dec 2016

    I had the rotary dimmer and high beam bypass installed by a BMW Master mechanic on my 2014 GS 1200. The install went OK, except for the extra length of the "plug and play" wiring harness. Apparently the harness is a universal fit item, as the length is at least 1 1/2 ft too long for this bike. The excess length required either cutting out and splicing the extra or finding a place to cram 1 - 2 ft. of wire. In the interest of time and dependability we decided to wrap the wire in a coil and stuff it above the battery. BMW has a Canbus electrical system, which may reject electrical devices it does not recognize. That is the reason I chose a mechanic familiar with BMW electronics. The lights work as advertised. As winter has set in, I will be unable to give a long term opinion for months.

  9. Amazing! 5 Star Review

    Posted by on 15th Nov 2016

    Very impressed. Plug & Play. Works perfectly and is very compact. A necessary addition to Any LED light installation.

  10. Rotary Dimmer 4 Star Review

    Posted by on 2nd Mar 2015

    Works as advertised! Easy to install and easy to used even with gloves. I used it with a Baja Designs Squadron Pro Race Light on my XR650L dualsport bike, and now with the high beam bypass, I have an acceptable hi/lo beam!

Showing reviews 1-10 of 13 | Next