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Headlight issues

Posted: Tue Jan 02, 2024 5:53 pm
by Funokata
Hi guys. Had an intermittent issue with the driving lights not turning off when I switch off main beam, or turning off a few seconds after. Gave the loom a wiggle where it comes around the radiator and goes to the rad fan/driving lights/earth block and the lights go off and I can hear the relay click. Figured there was a chafed wire or something. Stripped it all back and found nothing amiss. Cleaned up the little block where all the earths are and put it back together.

Now...it worked as it should briefly, then one light goes up one up and down twice and stays down, main beam on one only, and a buzzing noise from behind the dash for a second, then with key out the ignition barrel stays illuminated when it should dim..I feel like I'm going a bit mad, any ideas??

Oh also, what is the relay mounted in front of the radiator in a rubber sleeve?

Re: Headlight issues

Posted: Wed Jan 03, 2024 9:14 am
by Micron
The common issue is a bad / faulty connector on the back of the lights, it can also have the affect of causing the driving lights to stay on.
The cure in most cases is a replacement connector, which will probably need crimps to connect the fly leads from the connector.

I believe that the relay in front of the rad is for the Air Bag system, it's the center sensor

Re: Headlight issues

Posted: Wed Jan 03, 2024 12:08 pm
by Funokata
Do you mean the connector for the lights or the motors? Are they probe specific? Thanks

Re: Headlight issues

Posted: Wed Jan 03, 2024 12:12 pm
by Micron
Funokata wrote:
Wed Jan 03, 2024 12:08 pm
Do you mean the connector for the lights or the motors? Are they probe specific? Thanks
For the lights, they are generic, when you look at them, you might find that they are burnt or tarnished, although some of your comments about the buzzing behind the dash is interesting.

i guess sometimes you have to look at the easy option first, before stripping down the whole car :o

Re: Headlight issues

Posted: Fri Jan 05, 2024 10:40 am
by Tommyb 2579
Had a problem with my headlights recently wouldn’t work,tested bulbs,fuses,relay and wiring all good turned out to be indicator arm light switch arm,had a spare one so disconnected plugs under steering column connected spare one and everything worked,so then I had to strip steering wheel off to fit spare one,worth a try if you have a spare one.🤞

Re: Headlight issues

Posted: Mon Jan 08, 2024 10:37 am
by Funokata
Ah I don't sadly. I changed the headlight connectors on Saturday, they were covered in verdigris and a bit of corrosion. It's still playing up though, my headlights turn on, but if I flick to high beam then back to dipped the left light is fine but the right is very dim/just the parking light and the high beam indicator ok dash is illuminated dimly. The lights then won't retract if I turn them off or turn the ignition off even. I've swapped the driving light and headlight relays with no effect.

Any other obvious bits it might be before I go digging into the loom?

Re: Headlight issues

Posted: Mon Jan 08, 2024 2:32 pm
by cpt black
Sounds like a bad earth or the stalk has gone bad i have a spare stalk unit if interested £17 posted
Kev

Re: Headlight issues

Posted: Mon Jan 08, 2024 4:01 pm
by Funokata
Found it! It was an earth in the block where they all terminate. In just the right position it loses continuity, I guess it moves around as I drive hence the intermittent issues.

Re: Headlight issues

Posted: Mon Jan 08, 2024 4:16 pm
by cpt black
Good news well done ;)

Re: Headlight issues

Posted: Tue Jan 09, 2024 8:55 pm
by Kit
Did you check the H4 connectors at rear of the headlight units, they often burn out

Kit