How to Add Hazard Light With Switch for Scooter/bike

Introduction: How to Add Hazard Light With Switch for Scooter/bike

About: My name is Rahil Chodankar DIY person and being on Instructables justifies that ;P Residing in Goa state of India. Academically qualified as Computer Engineer. I have a bad habit of wanting to know how thin…

Hazard light is blinking all 4 side lights together. It helps greatly in bad weather conditions.

As my scooter didn't have the hazard light i thought of going through the DIY route.

My scooter is Honda Activa and hence this will work perfectly on honda dio , honda aviator, hero pleasure etc

Please note this method works well on an electronic flasher.It will not work on thermal flasher.


Do not proceed any further if you don't know what this is all about. your warranty may be void by doing this.

I am not to be held responsible for any of your damage(s) if occurred under any circumstances whatsoever.

Step 1: Materials, Tools Needed

you will need the following things:

  1. Hazard light switch Button
  2. I have used the following flasher. it comes with adjustable flashing speed too.

  3. Phillips screwdriver
  4. Wire stripper
  5. hacksaw blade
  6. Insulation tape
    or any other form of insulation material will do.
  7. Common sense

Step 2: Prepare the Area

Have a close look at the area where you want to place this button. (you will have put a hole into the plastic dash.)

Check the image for an approximate idea.

then mark the measurements to drill a hole to fit the button.

P.S sorry I did't click pictures when i did this mod.

Step 3: Connection

The stock sidelight switch consist of 3 wires in case of my scooter.

The middle wire is power supply and the left and right wires are to carry current to appropriate right and left lights.

(NOTE: In case of 4 wires please find out the proper wires and connect accordingly.)

The hazard switch button consist of 3 wires.

use the wire stripper to strip little insulation from all 3 stock wires to expose the wire .

Now connect the hazard buttion middle wire to the middle wire of the stock wiring. similarly follow for the left and right wire.

Step 4: Test the Setup

Check if the connections are proper and then press the hazard button.

All 4 side lights should blink together.

once everything is set, use the insulation tape to cover up the new connection points made.

It should look something closed to as shown in the image.


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    5 Discussions


    Question 1 year ago

    This is great but I have two questions. 1) You don't say how/where you installed the flasher. Is it in place of the original? If the current flasher works, is the additional flasher needed? 2) Do the blinkers/indicators have to be turned on for and then the hazard button to function or does the hazard button work independently? Thank you!


    Reply 4 years ago

    Thanks bro !! :)

    Zen Innovations
    Zen Innovations

    4 years ago

    This is a neat small mod. Indian Manufacturers have skipped a very basic function due to cost cutting.


    Reply 4 years ago

    Thanks bhvm.. much appreciated :)
    This function is much needed and is kind of necessary for scooters.