Ajs DD loosing lights when breaking 1ao

[kezzington]

So this bike of mine is becoming more double then it's worth

When I have my lights on and use the front or rear break I loose all lights front and back including indicators had a recent problem with blowing fuse on the battery

[JRH]

When you say loose do you mean the lights go off when the brakes are applied then come back on or the lights go off as a fuse blows.

[JRH]

Did you find out why the fuse blew in the first place?

[TimR]

Have you replaced a bulb recently ?

If so have you inserted the correct bulb in the correct orientation ?

[fastbob]

This is God's punishment for putting an AJS badge on a Chinese cruiser style 125

[fastbob]

Seriously though, you need to get in there amongst the electrics inside the headlamp and pop all connections apart and remove all traces of water . You probably just have a short somewhere caused by the soaking the bike got the other day. To help stop this happening again try sealing the headlamp shell by running electrical tape around the rim .

[Guest]

When I have my lights on and use the front or rear break I loose all lights front and back including indicators

 

...Sounds exciting! ...but at least it will teach you how to control the speed of your bike just using the engine and gearbox......so not all doom & gloom!

But seriously....(if that's at all possible... ) Does it do it on main beam as well? What do the lighting and indicator circuits have in common? An earth? I am willing to bet that an earth has gone bad and that they have "found" an alternative earth path via the brake light filament. When there is a voltage across the brake light, the "earth" is removed causing the lights to go out. Test by obtaining an old bulb with a blown brake filament, fitting it and seeing if the problem persists. (And before anybody has a go, it sounds plausible to me.....)

[Chrissb6]

Hi, sounds like a short circuit on the brake light circuit. First remove the brake light bulb and switch on the lights, then press and squeeze lever and peddle one by one. If the lights stay on assume there's a fault in the light unit or bulb. If the fuse blows replace it and then press the brake peddle and see if the lights go's out followed by the lever to determine which circuit causing the fault. Check the wiring in particular round the head stocks and places where the cables are on the move when you turn the bike for a tight - rubbed or chafed wire. Hope this helps

[Guest]

Hi, sounds like a short circuit on the brake light circuit. First remove the brake light bulb and switch on the lights, then press and squeeze lever and peddle one by one. If the lights stay on assume there's a fault in the light unit or bulb. If the fuse blows replace it and then press the brake peddle and see if the lights go's out followed by the lever to determine which circuit causing the fault. Check the wiring in particular round the head stocks and places where the cables are on the move when you turn the bike for a tight - rubbed or chafed wire. Hope this helps

 

And see post 7 above....difficult to say without an answer to JRH's question (post 2 above). Is it an intermittent failure - i.e. the lights come back on when the brake lever or pedal is released, or does a fuse blow when the brake light circuit is energised?

[Chrissb6]

Hi, sounds like a short circuit on the brake light circuit. First remove the brake light bulb and switch on the lights, then press and squeeze lever and peddle one by one. If the lights stay on assume there's a fault in the light unit or bulb. If the fuse blows replace it and then press the brake peddle and see if the lights go's out followed by the lever to determine which circuit causing the fault. Check the wiring in particular round the head stocks and places where the cables are on the move when you turn the bike for a tight - rubbed or chafed wire. Hope this helps

 

And see post 7 above....difficult to say without an answer to JRH's question (post 2 above). Is it an intermittent failure - i.e. the lights come back on when the brake lever or pedal is released, or does a fuse blow when the brake light circuit is energised?

Agree Mate, l thought that he blowing fuses, he needs to clean and check all the earthing points and neutral connections.