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Author Topic: Brake Light Bulb Check  (Read 2362 times)

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amba

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Brake Light Bulb Check
« on: 10 January 2020, 14:38:45 »

Odd one this,any pointers  ?
Always brake light check comes on with ignition and goes out once brake pedal is pressed.
Today Im getting a brake bulb check come up every so often when I brake.
Checked both bulbs and 1 had failed ..great I thought and replaced it with another,but still getting the same icon appear.
Top brake light works but both on rear wings dont.
Bit puzzled as neither bulb is blown ..have checked fuse #2 and all sound there aswell
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Andy B

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Re: Brake Light Bulb Check
« Reply #1 on: 10 January 2020, 17:16:54 »

I'd be checking for good clean contacts in the bulb holders and the loom to the light units first  :). After that .... no idea  ??? And decent quality bulbs.
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Doctor Gollum

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Re: Brake Light Bulb Check
« Reply #2 on: 10 January 2020, 17:37:23 »

Correct bulbs fitted? Correctly?  :-\
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STEMO

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Re: Brake Light Bulb Check
« Reply #3 on: 10 January 2020, 18:40:11 »

Correct bulbs fitted? Correctly?  :-\
Al, is 12v supplied to one side and then jumped across to the other?
« Last Edit: 10 January 2020, 18:44:42 by STEMO »
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Andy B

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Re: Brake Light Bulb Check
« Reply #4 on: 10 January 2020, 19:15:11 »

Correct bulbs fitted? Correctly?  :-\
Al, is 12v supplied to one side and then jumped across to the other?

12 volts is supplied to the relevant terminal on the base of the lamp/bulb and earths out on the side of the base of the bulb
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amba

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Re: Brake Light Bulb Check
« Reply #5 on: 10 January 2020, 20:01:50 »

Thanks guys.

Tried 2 new bulbs and still no luck..then found wire had broken at base of plug ...will get soldering iron out tomorrow.( which with my soldering skills wont be pretty ..but hopefully fixable )
Thought it odd 2 bulbs had blown
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STEMO

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Re: Brake Light Bulb Check
« Reply #6 on: 10 January 2020, 20:17:58 »

Correct bulbs fitted? Correctly?  :-\
Al, is 12v supplied to one side and then jumped across to the other?

12 volts is supplied to the relevant terminal on the base of the lamp/bulb and earths out on the side of the base of the bulb
My question was whether they were wired in series or parallel, hence a loose/broken wire on one side would knock out both.
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amba

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Re: Brake Light Bulb Check
« Reply #7 on: 10 January 2020, 20:46:10 »

I suspect they are as neither worked and both bulbs were intact and worked when I pushed the broken bit of wire back against the bit it had broken off.

Strange really as you would of expected 1 to stay working more as a safety feature but who knows electrikery
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Doctor Gollum

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Re: Brake Light Bulb Check
« Reply #8 on: 10 January 2020, 20:46:52 »

Light loom runs down the left sill to the left tail lights/bootlid/tailgate then across the rear boot frame to the right. ;)
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Doctor Gollum

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Re: Brake Light Bulb Check
« Reply #9 on: 10 January 2020, 20:47:12 »

I suspect they are as neither worked and both bulbs were intact and worked when I pushed the broken bit of wire back against the bit it had broken off.

Strange really as you would of expected 1 to stay working more as a safety feature but who knows electrikery
Centre one was ::)
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amba

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Re: Brake Light Bulb Check
« Reply #10 on: 10 January 2020, 21:14:50 »

Good point Al and well spotted,forgot about that 1 working so atleast cars behind me knew I was braking
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Andy B

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Re: Brake Light Bulb Check
« Reply #11 on: 10 January 2020, 23:16:51 »

Correct bulbs fitted? Correctly?  :-\
Al, is 12v supplied to one side and then jumped across to the other?

12 volts is supplied to the relevant terminal on the base of the lamp/bulb and earths out on the side of the base of the bulb
My question was whether they were wired in series or parallel, hence a loose/broken wire on one side would knock out both.

Ah! I understand you now ..... the question could've been phrased better  ::) ::) ;)
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amba

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Re: Brake Light Bulb Check
« Reply #12 on: 12 January 2020, 17:28:42 »

All fixed I,m glad to say...existing plug cut off loom.Made new section of wiring loom and joined back together soldered and heat shrunk.Doesnt look perfect but will probably only ever be seen by me ...important thing is both wing brake lights now work again.
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Andy B

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Re: Brake Light Bulb Check
« Reply #13 on: 12 January 2020, 22:07:22 »

All fixed I,m glad to say...existing plug cut off loom.Made new section of wiring loom and joined back together soldered and heat shrunk.Doesnt look perfect but will probably only ever be seen by me ...important thing is both wing brake lights now work again.
:y :y
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