Turn Signal Repair
Thread Starter
Senior Member
Joined: Sep 2008
Posts: 468
Likes: 23
From: Los Angeles
2005 C230 Sport Coupe
Turn Signal Repair
Ok Guys,
Also posted in Tech Forum.
Here's what i found.
The computer in the car stops the voltage to the wire as soon as it detects a open fault and does not restore power to that wire until the key has been re-cycled.
The problem with my car is that the bulb socket metal tabs do not make contact with the headlight housing when the socket is fully rotated in the headlight housing on the drivers side, pass side is OK.
Don't know why, possible plastic wearing or manufacturing tolerance issues, but i digress.
The way to fix it is to take 2 wires with very small female spade connectors on the 2 wires.
Carefully plug the 2 wires into the headlight housing with the main wiring harness that goes to the headlight housing unplugged.
On the C230 the turn signal wires are the 2 bottom wires, big brown which is ground and black with white for drivers side, or black with green for pass side.
Hook up a test light powered in series with 1 wire and ground the other,
Or use a volt, ohm meter like i did.
Rotate the turn signal socket until you have the test light lit, or have continuity with the VOM.
That's it, remove the wires and plug in the main wiring harness to the headlight housing and you will have a working turn signal.
Dave
Also posted in Tech Forum.
Here's what i found.
The computer in the car stops the voltage to the wire as soon as it detects a open fault and does not restore power to that wire until the key has been re-cycled.
The problem with my car is that the bulb socket metal tabs do not make contact with the headlight housing when the socket is fully rotated in the headlight housing on the drivers side, pass side is OK.
Don't know why, possible plastic wearing or manufacturing tolerance issues, but i digress.
The way to fix it is to take 2 wires with very small female spade connectors on the 2 wires.
Carefully plug the 2 wires into the headlight housing with the main wiring harness that goes to the headlight housing unplugged.
On the C230 the turn signal wires are the 2 bottom wires, big brown which is ground and black with white for drivers side, or black with green for pass side.
Hook up a test light powered in series with 1 wire and ground the other,
Or use a volt, ohm meter like i did.
Rotate the turn signal socket until you have the test light lit, or have continuity with the VOM.
That's it, remove the wires and plug in the main wiring harness to the headlight housing and you will have a working turn signal.
Dave
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Ok Guys,
Also posted in Tech Forum.
Here's what i found.
The computer in the car stops the voltage to the wire as soon as it detects a open fault and does not restore power to that wire until the key has been re-cycled.
The problem with my car is that the bulb socket metal tabs do not make contact with the headlight housing when the socket is fully rotated in the headlight housing on the drivers side, pass side is OK.
Don't know why, possible plastic wearing or manufacturing tolerance issues, but i digress.
The way to fix it is to take 2 wires with very small female spade connectors on the 2 wires.
Carefully plug the 2 wires into the headlight housing with the main wiring harness that goes to the headlight housing unplugged.
On the C230 the turn signal wires are the 2 bottom wires, big brown which is ground and black with white for drivers side, or black with green for pass side.
Hook up a test light powered in series with 1 wire and ground the other,
Or use a volt, ohm meter like i did.
Rotate the turn signal socket until you have the test light lit, or have continuity with the VOM.
That's it, remove the wires and plug in the main wiring harness to the headlight housing and you will have a working turn signal.
Dave
Also posted in Tech Forum.
Here's what i found.
The computer in the car stops the voltage to the wire as soon as it detects a open fault and does not restore power to that wire until the key has been re-cycled.
The problem with my car is that the bulb socket metal tabs do not make contact with the headlight housing when the socket is fully rotated in the headlight housing on the drivers side, pass side is OK.
Don't know why, possible plastic wearing or manufacturing tolerance issues, but i digress.
The way to fix it is to take 2 wires with very small female spade connectors on the 2 wires.
Carefully plug the 2 wires into the headlight housing with the main wiring harness that goes to the headlight housing unplugged.
On the C230 the turn signal wires are the 2 bottom wires, big brown which is ground and black with white for drivers side, or black with green for pass side.
Hook up a test light powered in series with 1 wire and ground the other,
Or use a volt, ohm meter like i did.
Rotate the turn signal socket until you have the test light lit, or have continuity with the VOM.
That's it, remove the wires and plug in the main wiring harness to the headlight housing and you will have a working turn signal.
Dave
Thanks Dave but next time sit back & read what you have written & place yourself in the position of the receiver. Say to youself "if I was not able to visualise what was going on would I understand this?" This is the key to successful communication.
Go well
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Don't worry - we have many people on this forum that don't speak English as a first language from Jakarta & Metro Manila & Ho Chi Minh City & KL & HK & Lisbon & Rio & Bangkok and so on - as long as we try & communicate & understand one another & help one another.
You know the old joke. The UK & America - two countries separated by what is supposed to be a common language.
You know the old joke. The UK & America - two countries separated by what is supposed to be a common language.
Last edited by Glyn M Ruck; Nov 24, 2008 at 04:04 PM.
