Headlights

An area for all matters concerning the Citroen CX.

Moderator: RichardW

User avatar
jwalshe
Posts: 212
Joined: 12 Jun 2011, 20:04
Location: Iver, Buckinghamshire
My Cars:

Headlights

Post by jwalshe » 28 May 2013, 00:17

Hello!

Are the Series 2 single optic headlamps supposed to glow when switched to sidelights?

Mine (1988 TRS) doesn't do it (only the sidelights come on). I'm sure the headlights themselves are supposed to give off a low-level glow?

James
0

User avatar
Diabolical
Posts: 248
Joined: 27 Feb 2009, 21:08
Location: Buckinghamshire -South
My Cars:

Re: Headlights

Post by Diabolical » 28 May 2013, 17:58

No it's only sidelights that come on.
0
06 C5 2.0L HDi Exclusive Estate 20020k and rising. :-)
1987 Citroen CX Prestige. De Corps Brun Maya - cuir blond tabac, très chic
08 Jaguar X-Type 3.0V6 Sovereign Estate - Green (HGZ) - Leather Ivory seats.

citroencx.co.uk

User avatar
myglaren
Forum Admin Team
Posts: 14381
Joined: 02 Mar 2008, 14:30
Location: Washington
My Cars: 2003 C5 2.0 HDi 110 SX 224848 miles
x 295

Re: Headlights

Post by myglaren » 28 May 2013, 18:58

Some models may have been fitted with the Dim-Dip system, long gone now. IIRC my Renault 11 had it.
The headlights would come on at low power together with the sidelights as for a while it was illegal to drive with just sidelights, may still be for all I know. No-one seems to care though.
0
________________________________
Steve
If at first you don't succeed, parachuting probably isn't for you.

Jackie Evancho

User avatar
jwalshe
Posts: 212
Joined: 12 Jun 2011, 20:04
Location: Iver, Buckinghamshire
My Cars:

Re: Headlights

Post by jwalshe » 29 May 2013, 00:02

Ah, okay! I've seen quite a few with their headlights glowing in the past. So what does that cylindrical shaped thing attached on the offside headlamp do? Always thought that had something to do with it.
0

User avatar
myglaren
Forum Admin Team
Posts: 14381
Joined: 02 Mar 2008, 14:30
Location: Washington
My Cars: 2003 C5 2.0 HDi 110 SX 224848 miles
x 295

Re: Headlights

Post by myglaren » 29 May 2013, 06:20

That will be the Dim-dip resistor that has probably gone open circuit.
If you want them to glow you could probably replace it.

Image
Something like this (this is a Rover/MG unit).

These type of resistors are available from Maplins etc. This is 72 Ohm one.
0
________________________________
Steve
If at first you don't succeed, parachuting probably isn't for you.

Jackie Evancho

User avatar
jwalshe
Posts: 212
Joined: 12 Jun 2011, 20:04
Location: Iver, Buckinghamshire
My Cars:

Re: Headlights

Post by jwalshe » 29 May 2013, 21:45

Thanks Steve! I quite like the somewhat sinister glow I've seen on some CXs. I replaced the resistor with another one from a CX but I'm guessing it's not working or something isn't connected properly...
0

User avatar
myglaren
Forum Admin Team
Posts: 14381
Joined: 02 Mar 2008, 14:30
Location: Washington
My Cars: 2003 C5 2.0 HDi 110 SX 224848 miles
x 295

Re: Headlights

Post by myglaren » 29 May 2013, 22:49

Should be easy to test with a multimeter.
Dealer may have them. There are some second-hand ones on eBay but they look pretty crusty :(
0
________________________________
Steve
If at first you don't succeed, parachuting probably isn't for you.

Jackie Evancho

User avatar
jwalshe
Posts: 212
Joined: 12 Jun 2011, 20:04
Location: Iver, Buckinghamshire
My Cars:

Re: Headlights

Post by jwalshe » 29 May 2013, 22:56

Yeah - made the mistake of buying a really crusty one off EBay! Should have asked if it was actually working...
Doh!
0

User avatar
Citroening
Posts: 2517
Joined: 26 Feb 2010, 21:19
Location: Cambridgeshire
My Cars: Various Makes/Models Nowadays...
x 1

Re: Headlights

Post by Citroening » 29 May 2013, 23:40

jwalshe wrote:So what does that cylindrical shaped thing attached on the offside headlamp do?

Whereabouts James?

As you are standing in front on the car (bonnet up) and looking down to the offside head lamp there should be a cylindrical tube/thing with a few wires coming off of it going to a multiplug - it should be affixed to the metal to the right of the light by a square push in clip.

If we're talking about the same thing I believe that is the outside temperature sensor?

I'll try and find a pic at some point. I'm probably barking up the wrong tree...
0
Franklin

User avatar
Citroening
Posts: 2517
Joined: 26 Feb 2010, 21:19
Location: Cambridgeshire
My Cars: Various Makes/Models Nowadays...
x 1

Re: Headlights

Post by Citroening » 30 May 2013, 09:51

Citroening wrote:I'll try and find a pic at some point. I'm probably barking up the wrong tree...

Here's one.

Image
0
Franklin

User avatar
jwalshe
Posts: 212
Joined: 12 Jun 2011, 20:04
Location: Iver, Buckinghamshire
My Cars:

Re: Headlights

Post by jwalshe » 30 May 2013, 11:33

That's it!!! That's not an outside air sensor surely?
0

User avatar
myglaren
Forum Admin Team
Posts: 14381
Joined: 02 Mar 2008, 14:30
Location: Washington
My Cars: 2003 C5 2.0 HDi 110 SX 224848 miles
x 295

Re: Headlights

Post by myglaren » 30 May 2013, 20:27

That looks very much like what they were selling as the dim dip resistor.
0
________________________________
Steve
If at first you don't succeed, parachuting probably isn't for you.

Jackie Evancho

User avatar
Citroening
Posts: 2517
Joined: 26 Feb 2010, 21:19
Location: Cambridgeshire
My Cars: Various Makes/Models Nowadays...
x 1

Re: Headlights

Post by Citroening » 30 May 2013, 20:31

I'm still unsure - I'm sure someone will come along and give us the correct answer! :?

I bet Neil/CGAT will know?
0
Franklin

2smv627
Posts: 30
Joined: 18 Oct 2010, 21:15
Location:
My Cars:

Re: Headlights

Post by 2smv627 » 31 May 2013, 15:55

Hi, definitely dim-dip resistor, the outside air temp sensor is a small black unit with 2 wires usually fitted to the edge of the front bumper. (James - I don`t think your CX has an outside temp display in it)
0

User avatar
jwalshe
Posts: 212
Joined: 12 Jun 2011, 20:04
Location: Iver, Buckinghamshire
My Cars:

Re: Headlights

Post by jwalshe » 31 May 2013, 16:16

Nope - I thought it'd be odd to have a sensor but no temp display inside! All I have is a clock. And very little else, being a TRS with basic spec interior!

So question is.... how do I get the thing working. Something for a Sunday afternoon, I think. Will report back soon...
0