HELP!

[Adil 0]

Hi all, need help!

 

My headlights on my 1.8 16V keep dimming. This only happens when the car is running and the car is in gear, particularly when I push the acelerator hard, infact the accelerator on occasion acts like a switch! dimming my headlights ie it does not happen when I rev the engine freely standing still. and oh the alternator belt is tight.

 

Its a nightmare, other drivers think I am flashing them when I lift of the accelerator as the headlights go back to normal.

 

I heard about a uprated wiring loom for the headlight, I might get one in hope that it sorts it out.

 

Anyone had a similar prob?

 

Had my corrado for 3 year now and for some reason this year I am getting lots anoying of costly problems!

 

ADs.

[ben16v 0]

Adil, PM h100vw for a loom, prob the best mod you could buy for the C

[TomB 0]

Welcome to the Forum mate, and I'll second what ben16v, said, get an uprated loom from h100vw and that should solve your problems.

Cheers,

Tom

[Supercharged 2]

May be your voltage regulator on the alternator, try putting a voltmeter across the battery and get someone to rev the engine... (should read over 14v always with engine running)

[GIXXERUK 0]

are the lights dimming or are they dropping to dipped beam ?

 

the uprated loom makes a dramatic difference whetherit would fix your problem depends on what the problem is really because it is plug n play , so it does use the existing loom

the lights at the mo get 9v , the loom uses this to switch relays to allow the lights to run direct from the battery

[Adil 0]

Hi Chaps,

 

Thanks for your replies.

 

The headlamps seem to twitch and then dim as if they are dipped, not switching to dipped I believe.

 

I will try and investigate the problem prior to buying/making a new loom I think.

 

I measured the voltage accross the battery when I was reving the engine and it was 13.8V. This drops to 13.7V when the lights are switched on.

 

Are these readings ok?, bearing in mind I have 1.8 16V with a 65Amp alternator.

 

Also I have noticed that one of my rear fog lights has blown a bulb. Would this affect the rest of the lighting system?

 

I have so many things to sort on my C, my girlfriend is getting jelious!, one step at a time.

 

Ad

[Supercharged 2]

I think most VW alt's should put out 14.5, maybe worth buying a new brush/regulator pack for it...

[davidwort 0]

I think most VW alt's should put out 14.5, maybe worth buying a new brush/regulator pack for it...

 

13.8v should be fine, providing it doesn't drop loads when you switch all the electrics on, I'd say it's more likely to be a wiring/switch contact problem with that age of car, you could wire one of the lights permanently on to test that before going for a relay(loom) setup, although that is a good investment on a corrado anyway.

The alternator diodes can give up on that type/age of alternator, but that will generally result in a 12-12.5v or less charge to the battery with the engine running.

 

David.

[Adil 0]

I fitted a new voltage regulator and still had the problem of the headlamps dimming when driving.

 

I have just fitted an uprated wiring loom and seems to have sorted the problem!! yippe!

 

The question I have left on the topic is this dim dip bussiness. I have disconnected 1 yellowish connection block comming from a 75mm long componet thats secured to the inner wing beside the battery. I believe this is coil that people talk about, but is there one per headlight? ie do I have to do the same to the other side when the air box is?

 

I have it disconnected and see no difference in operation of the lights with regards to switching/engine running etc.

 

 

Oh and after I sorted this problem I grabed the door handle to get into the car and the door would not open! ... one prob goes another comes! I will ask as another topic.