Rear brake light not working.

Rubidium

pappa_golf wrote: »

because the filament has burnt out and is resting on the other filament

You are posting rubbish!

Your theory does not explain why the associated rear light goes off when the brakes are applied and makes absolutely no sense!

pappa_golf wrote: »

yes , bulb does not work , can YOU not change it?


why are you believing this earthing thing? , change the bulb!

You obviously are not familiar with a classic earth fault that causes this very effect, which is usually caused by a bad/loose connection or corrosion.

forgotmyname

Rubidium wrote: »

You are posting rubbish!

Your theory does not explain why the associated rear light goes off when the brakes are applied and makes absolutely no sense!



You obviously are not familiar with a classic earth fault that causes this very effect, which is usually caused by a bad/loose connection or corrosion.

Not rubbish at all, Dont forget the brake and tail light are a single bulb.

The brake light bulb has blown and the tail light works as normal. Until the brake is applied where a voltage runs through the partial brake filament and shorts out the tail light.

Could be that or even a simple loose fitting bulb, flowing enough electrical pixies to light the tail bulb but not enough pixies available to light the brake light bulb also.

ohreally

Rubidium wrote: »

You obviously are not familiar with a classic earth fault that causes this very effect, which is usually caused by a bad/loose connection or corrosion.

You are obviously not familiar with a DC circuit.

pappa_golf

OK there is an easy answer to this


firstly change the bulb


if the fault is still there then check for other problems

z1a

Are the front brake lights OK though?

forgotmyname

z1a wrote: »

Are the front brake lights OK though?

Its a MATIZ not a train :T:T:T:T:T

rich13348

1. Change bulb
2. While changing bulb check earth connector for build up of corrosion and clean both the spade connector and plug.

missile

Empty the ash tray

Joe_Horner

forgotmyname wrote: »

Not rubbish at all, Dont forget the brake and tail light are a single bulb.

The brake light bulb has blown and the tail light works as normal. Until the brake is applied where a voltage runs through the partial brake filament and shorts out the tail light.

That would still light one or other filament - at least until it blows the part of the side light filament between the "short" and earth, which will now be carrying a higher current than it was designed for.

Could be that or even a simple loose fitting bulb, flowing enough electrical pixies to light the tail bulb but not enough pixies available to light the brake light bulb also.

Which is one form of a bad earth.

Iceweasel

I'm not familiar with a Matiz - but do the rear lights actually have twin-filament bulbs for side and brake?

I thought that the trend these days was to have all separate bulbs.