Question about Bajaj Pulsar 150 Motorcycles

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Headlight fuses I have a problem with my motorcycle and its getting to be a desperate one. So this is the only place I expect some real help. I have a Pulsar 150 KS from 2002- it works perfectly fine and even held its own without a problem in Lahaul-Spiti this year. The bike has had very few major issues and this time its mainly electrical. I came back to the country last year and the bike was with a friend of mine. When I started riding, the bulb blew at night as I was coming back from a long-ish ride. The bulb had been there for a few years so I thought it was a normal thing. I used a halonix M5 blue bulb after that and that also blew pretty soon. I thought that the bulb may have been faulty. But since then, I have changed a few more bulbs and they keep blowing at regular intervals. I got the regulator changed last year but it did not help. I got the wires checked and the mechs found a short somewhere and taped it and "fixed" it. It seemed okay for a while till I realized another thing- if I have the headlights on for a longer period of time, it would get "fused"- and since I have been travelling hours at a stretch and even use low beam during day time, the problem keeps showing up. This weekend, I got the regulator changed and got a new Halogen bulb installed- but it blew up today in grand fashion when I pulled the throttle! I think there was a flash of brilliant white light as it died! I think the regulator was defintely at fault this time because it was the first time since I installed the bulb that I even switched on the lights for more than 5 minutes! The possible culprits are the regulator (RI unit?) and short circuit in wiring. Should I get the whole wiring changed? Or is the problem something else? Its been over a year and I need to find a final solution once and for all. Please help!

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Take the bulbs out. put a voltmeter across the termals (Which go to the bulb)
Start your bike & look at the voltage going to the bulb.
Rev your engine & see if the voltage rises.
If it goes above 14V then there is something wrong in the charging curcuit. (Regulator)
or if one of the diodes in the recifier has gone short curcuit then
you could be getting AC into the battery (Very Bad)

Posted on May 15, 2014


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Posted on Jan 02, 2017

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SOURCE: changing headlight

Had a similar problem on mine when I installed the cobra light bar. If you remove the headlight from the housing there is a connector (think it was orange) with a single wire. It is the starter-light cutout. my connector shorted out so I had to cut it and replace it. No headlight problems since. It is worth checking, I had to pay $50 to have the Honda shop find it. Good luck & ride safe!

Posted on Jun 02, 2009

  • 12 Answers

SOURCE: Pulsar 150 CC headlight blown off severial times

This is problem cant be solved by changing head light. You need to replace wiring of your bike. This problem is occur because of short-circuit in wiring.

Posted on Jul 02, 2009

  • 14 Answers

SOURCE: 2003 BMW R1150RT Headlight (low beam) does not work

Headlight relays..1 for low 1 for high..These are most time under gas tank.Might be also located on battery box

Posted on Jul 25, 2009

  • 1 Answer

SOURCE: Bike won't start, battery bulged

Chances are it is the rectifier/regulator which is a sealed unit that has to be replaced if faulty. A bad one can cook your battery as well as your light bulbs and wiring. To check this connect a VOM across your battery terminals while the bike is running. If normal you should see about 13.5 volts. If your voltage climbs up to the 18 to 22 volt range or higher you must replace the part before you do further damage. Also be aware of the dangers of over charging a battery as it can explode and cause personal injury. If your battery has been cooked you will have smelled sulfuric acid and the battery will become hot to the touch. If that is the case you will also have to replace the battery as well as it will no longer hold a charge. When this happens the battery will bulge and this is called plate bow. By replacing both the battery and the rectifier/regulator you should be as good as new. In very rare instances it could be the stator which could cost a lot more but chances are its just the rectifier/regulator. I've seen them for very cheap prices on Ebay.

Posted on Aug 01, 2009

  • 269 Answers

SOURCE: accessory fuse keeps blowing, headlight not working

I know this sounds aomewhat general, however please give the following some thought:
Check your relays, if you have an aftermarket horn you may have a different relay. To troubleshoot unplug your headlight, unplug your horn, etc.. Turn your ignition switch to accessory only. See if the fuse pops. If it does unplug whatever added accessories you may have still have plugged in. Once you can get the fuse to stop popping, turn the ignition switch to on. Then one at a time plug you accessory, headlight, etc. back in. When you find what pops the fuse, unplug that item, start plugging in the other items, if the fuse has not popped you have potentially isolated the circuit causing the issue. Now check the wiring for loose connections, bad ground, and CHECK the relay if that item has one. Hope this helps,


Posted on Aug 19, 2009

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