High beam tell tale won’t work

[carrleask 10]

Hi folks mot time again giving the old girl a check over noticed the high beam tell tale on dash won’t work. All lights work as they should and the tell tale come on if I hold the stalk in but goes out as soon as I slip it I thought must be the switch so changed it no joy checked all fuses. Only other thing I have noticed is when I switch the head lights on with ignition off switch illuminates with ignition on switch illumination goes off but head lights remain on and working fine anyone had a similar problem and help would be much appreciated thanks

 

 

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[fendervg 32]

Hmm. Not sure what feeds the little blue bulb, but it's probably the switch in the stalk - afaik this sends current to a relay to turn on the high beams. I'd say take the steering wheel off and remove both stalks and give all the contacts a good clean as well as the switch part of the stalk, also check the multi-plugs connecting them back to the main loom behind the fusebox.

[carrleask 10]

Exactly what I have done hmmm

 

 

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[fendervg 32]

Strange. It's weird that it lights when you pull the stalk back to flash the lights. I had one that was very dim and then stopped working altogether so I replaced the bulb. I'd be tempted to check and maybe swap out the control relay with a known working one.

[carrleask 10]

Yea I think it’s my next move quite annoying when all lights work why won’t tell tale

 

 

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[carrleask 10]

Which relay is it none of them in my book actually say headlights. Thanks very much for your help

 

 

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[fendervg 32]

There are no relays as standard - just 4 fuses, one for each high and low beam. That's why a lot of people fit a relayed wiring loom as a modification to improve the light output. Current has to travel through two switches and several looms before it reaches the headlight bulbs in the factory design.

 

From what I can tell (although I always have a hard time reading VW wiring diagrams), low beams are fed directly from the headlamp switch - high beam is controlled by the flasher/high beam switch in the stalk, and the high beam indicator light is fed from that switch with 12v (looks like a white/black wire) into the 28 pin multi-plug at the back of the instrument cluster - it goes into terminal 25 there. After that its a printed circuit board. The Bentley manual suggest checking for 12v on that wire with ignition on/headlights on/high beam on, if you don't have any trace the wiring for continuity and then replace the switch stalk, then check the condition of the circuit board on the clocks.

 

Hope this might help a bit.

Edited June 10, 2018 by fendervg

[carrleask 10]

I had it in bits yesterday turned out to be the bulb why it was working when held in and wouldn’t stay on I don’t no but al good now thanks for your help

 

 

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[fendervg 32]

Ah, good to know it's fixed. All the other warning lamps in the bottom row are LEDs, but the high beam one is just a normal filament bulb with a blue cap - probably because blue LEDs were a bit of a holy grail back in the late 80s!

[carrleask 10]

Yea and probably the only one that gives bother. Thanks for the assistance

 

 

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[fla 9]

Similar issue on mine - uprated loom, lights come on normally, but full beam causes the main beam to dip to the parking lights only. And no full beam. Also, parking lights also come on when the two fuses to the relays are removed. I guess these are not in the same circuit?

 

Strangely, when the ignition is on (engine off), pulling the full beam causes the aux cooling pump to start???

[fla 9]

Mine looks like ive used the wrong relay for full beam - its a LD1A-12F which looks like its normally closed, and turns off with power. Its a 4 pin relay. Ordered some 'normally open' ones to see if they work...