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abhijeet080808 · 04-05-2009, 07:36 PM

Hi guys, recently I decided to replace the bulb in the tail light of my bike with LEDs. The procedure I followed is described below. Hopefully it will help someone else contemplating making the same mods.

Here is a pic of my bike

First, I have created a circuit board in the shape shown and mounted the LEDs. I used 10mm Red LEDs. The LEDs were soldered as per the circuit diagram. Diode used is 1N4007. Capacitor is 1000uF. Resistor - 200 Ohm.

As the parking tail light runs on AC, so used a bridge rectifier circuit to convert to DC. Capacitor is needed to reduce flickering. Now, I did not want any wire slicing. So used the old bulb to power the LEDs as shown..

The final product looks like this.

I am sorry that I have only one snap of the final tail light at the moment. Also this snap does not show the brake light. Only the parking light. Also at night, the number plate is covered with a cool red glow! I can upload further snaps as and when I click.

Similarly, I have also used white LEDs in the meter console. The while LEDs combined with the green screen found under the dials combine to give a cool teal colored glow! But this time, I forgot to click snaps while opening the console and fitting the LEDs!

I will be happy to answer any doubts regarding the mods.

Now, the reasons for doing all this? Agreed, the LEDs look cool. But I wanted to save power. LEDs consume hardly anything - each LED consume 40 milliwatts. The tail light consumes 5W, brake light - 21W and meter console lights - 3W X 3 = 9W. But as the brake light is not on continously, I save atleast 5W + 9W = 14W. Also, I have removed the front pilot light. So, total 19W saving. So for what purpose? To install a powerful headlight instead of the present 35W comfortably. After the mods, I can now easily install a 55W light without any strain on the alternator.

I will be shortly installing a new headlight. But, I recon I need to change the reflector too. Can you guys suggest which reflector to use? My bike is the old model P150 with round headlamp. I preferably want a direct fit. (Maybe Ambassador silbeam or maruti omni, maruti gypsy, trucks etc)

P.S. - All snaps were taken using my MotoROKR E6.

04-05-2009, 07:36 PM	#1 (permalink)
abhijeet080808 ElectroniX! Join Date: Sep 2008 Location: BLR/GHY/MAS Posts: 2,375	Retrofitted LEDs on my P150 Classic Hi guys, recently I decided to replace the bulb in the tail light of my bike with LEDs. The procedure I followed is described below. Hopefully it will help someone else contemplating making the same mods. Here is a pic of my bike First, I have created a circuit board in the shape shown and mounted the LEDs. I used 10mm Red LEDs. The LEDs were soldered as per the circuit diagram. Diode used is 1N4007. Capacitor is 1000uF. Resistor - 200 Ohm. As the parking tail light runs on AC, so used a bridge rectifier circuit to convert to DC. Capacitor is needed to reduce flickering. Now, I did not want any wire slicing. So used the old bulb to power the LEDs as shown.. The final product looks like this. I am sorry that I have only one snap of the final tail light at the moment. Also this snap does not show the brake light. Only the parking light. Also at night, the number plate is covered with a cool red glow! I can upload further snaps as and when I click. Similarly, I have also used white LEDs in the meter console. The while LEDs combined with the green screen found under the dials combine to give a cool teal colored glow! But this time, I forgot to click snaps while opening the console and fitting the LEDs! I will be happy to answer any doubts regarding the mods. Now, the reasons for doing all this? Agreed, the LEDs look cool. But I wanted to save power. LEDs consume hardly anything - each LED consume 40 milliwatts. The tail light consumes 5W, brake light - 21W and meter console lights - 3W X 3 = 9W. But as the brake light is not on continously, I save atleast 5W + 9W = 14W. Also, I have removed the front pilot light. So, total 19W saving. So for what purpose? To install a powerful headlight instead of the present 35W comfortably. After the mods, I can now easily install a 55W light without any strain on the alternator. I will be shortly installing a new headlight. But, I recon I need to change the reflector too. Can you guys suggest which reflector to use? My bike is the old model P150 with round headlamp. I preferably want a direct fit. (Maybe Ambassador silbeam or maruti omni, maruti gypsy, trucks etc) P.S. - All snaps were taken using my MotoROKR E6.