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Car LED lights....
in We've got it down to a T Mon Mar 27, 2017 12:32 pmby Randa france •
| 12.885 Posts
....and particularly the third brake light.
We are having intermittent problems with the third brake light (Yes. it only happens when my foot is on the brake pedal 
).
It's an LED light but it sometimes doesn't work. Get out of the car and give it a thump and it's good again for a short period of time. As they are at least 40 quid to replace I though I would first check out the wiring.
I've taken the light off the car and noticed that the insulation around the two core wiring was dodgy so I've replaced that and cleaned the connection as best I can.
Result, it still works intermittently. Does anyone know if an LED strip works like a string of Xmas lights ie. if one of the elements of the light is dodgy then none of them work (until you give them a good slap)?
Randa
ERIBAFOLK POP UP EVERYWHERE 1999 Eriba Troll 530 pushing a VW Touran 2L TDi Match
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RE: Car LED lights....
in We've got it down to a T Mon Mar 27, 2017 4:16 pmby Pepé Le Pew •
| 2.722 Posts
Quote: Randa france wrote in post #1One failed diode won't cause the whole thing to stop working.
....and particularly the third brake light.
We are having intermittent problems with the third brake light (Yes. it only happens when my foot is on the brake pedal
It's an LED light but it sometimes doesn't work. Get out of the car and give it a thump and it's good again for a short period of time. As they are at least 40 quid to replace I though I would first check out the wiring.
I've taken the light off the car and noticed that the insulation around the two core wiring was dodgy so I've replaced that and cleaned the connection as best I can.
Result, it still works intermittently. Does anyone know if an LED strip works like a string of Xmas lights ie. if one of the elements of the light is dodgy then none of them work (until you give them a good slap)?
Randa
As Martin suggested, it's much more likely to be a wiring issue than the incipient failure of the brake light unit itself.
Getting the car scanned will throw up the nature of the fault (i.e. an intermittent component problem or a short to ground caused by a wiring defect), but if it's in the wiring it probably won't help with the actual location of the defect.
And a scan will cost you unless you've got the kit to scan it yourself (
)If I were you the first thing I'd do is check is where the wiring passes through the flexible boot between the body and the tailgate. The thin wall insulation used on modern car wiring does become brittle over time, and anywhere subjected to repeated flexing is a good place to start looking.
Don't start chucking new parts at it without working out what's causing the problem.
.
yy-R56kh
RE: Car LED lights....
in We've got it down to a T Mon Mar 27, 2017 4:45 pmby Randa france •
| 12.885 Posts
Thanks both. It's easy to get at so I'll have another look at it tomorrow 
Randa
ERIBAFOLK POP UP EVERYWHERE 1999 Eriba Troll 530 pushing a VW Touran 2L TDi Match
RE: Car LED lights....
in We've got it down to a T Mon Mar 27, 2017 10:32 pmby mr_underhill •
| 688 Posts
Eriba Puck 1990 pushing a Fiat 500 Colour Therapy, Twin Air Turbo.
RE: Car LED lights....
in We've got it down to a T Tue Mar 28, 2017 1:34 pmby Randa france •
| 12.885 Posts
Chewing Gum (OK. Blue Tack)
Found the problem. It's where the two wires fit into the block that clips into the light housing. There is a minuscule movement of the wires in the block which surprisingly is enough to break the circuit. However the block and the wires are so small that it proved very fiddly indeed. Probably a new block is the ultimate answer.
In the meantime, I've managed to hold the wires and block in the appropriate position by using ..................................................Blue Tack
C'mon then jokers, do your worst.
Randa
ERIBAFOLK POP UP EVERYWHERE 1999 Eriba Troll 530 pushing a VW Touran 2L TDi Match
RE: Car LED lights....
in We've got it down to a T Tue Mar 28, 2017 1:45 pmby Pepé Le Pew •
| 2.722 Posts
Quote: Randa france wrote in post #8Might well be number 11 on this page.
Found the problem. It's where the two wires fit into the block that clips into the light housing. There is a minuscule movement of the wires in the block which surprisingly is enough to break the circuit. However the block and the wires are so small that it proved very fiddly indeed. Probably a new block is the ultimate answer.
Part number 4B0971832.
My fees are very reasonable
.
yy-R56kh
RE: Car LED lights....
in We've got it down to a T Tue Mar 28, 2017 2:03 pmby Randa france •
| 12.885 Posts
Certainly looks like it Pete. Thanks for the link
Randa
ERIBAFOLK POP UP EVERYWHERE 1999 Eriba Troll 530 pushing a VW Touran 2L TDi Match
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