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I am going to assume your alt is fine, but does it fluctuate with the lights?
I would say bad ground, but check alt/bat.

 

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it could possiblely be you're high beam switch having a bad ground in it when u click. I would start there.

 

Ok, that is towards the bottom of the steering column right? all of the grounds to it ar black wires correct?

 

anyone?

 

Correct, the Hi/Lo beam is on the top left side of the steering column, right by the ignition switch, deep inside the dash.
It helps to drop the steering column a bit to get to it, definitely easier access.

However, the Hi/Lo beam switch has no grounds. It is a simple mechanical switch for the hot lead to the headlights.
The light green wire is the one that supplies power from it to the high beams. You might have a loose connection somewhere and that connection might be arcing, causing the flicker.
The light green wire goes from the Hi/Lo beam switch to the C100 connector on the driver side and from there it travels along the driver side fender to the front of the vehicle.

Do the lights flicker only while driving or even when the car is parked and engine shut off?

Hope this helps.
Lou

 

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Looking at the steering column from underneath, it will look like this:
http://www.austinthirdgen.org/mkport.../highbeam1.jpg

The Hi/Lo beam switch is in the left upper corner of the picture, white and baby blue.

Hope this helps.
Lou

 

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any ideas?

 

if u turn your dash dimmer switch, do you feel binding at all?

 

Hey i have the same issue than you, how did you fix it? I think the problem was the dimmer switch ?

 

I am having the same issue, My high beams flicker when used. If you come up with a fix let me know. Thanks

 

I had the exact same issue tonight. Has anyone found the problem? I am sure we all have the same cause........ I will try to check mine later this week, if I locate the problem I'll post it here. If anyone gets to it before me, please post it too. Thanks!

 

 

My lights flickered - at first seemed to only be the high beams, but later I noticed it was everything but it was just hard to tell in the city (in the dark country it's easier to see what's flickering). I had my alternater tested first (why? because I was feeling lazy and the parts stores test for free). Alternator was the problem - mine was overcharging and thus making the lights flicker - had receipt even though the alternator was over 1 year old, got a free replacement - problem solved!

Might not be YOUR issue - but it only takes 10 minutes to have it checked, and you get to let someone else do it for free!

 

Hey I replace the dimmer headlight swich and i continue with the same problem, following the above recommendations i went to test my alternator o sorprice is charging 12 to 13.5 volts but the amps are 17 amps but based in the worker must chage more i will go to a spetialist this weekend and I will let you know.
I have a question all of you, do you have the stock light bulbs? I replace it by a H4 bulb and the problem started

 

check c100 connector at pin a2 for voltage (check the side coming from inside.) this is the green wire for the high beams. if you have close to battery voltage there your dimmer switch etc. is fine and that wire is bad. follow it and you'll find some splices. those are most likely your problem. if power side is fine then you have a bad ground and must see the ground distribution for your specific year.
I had a bad ground on my gauge cluster since the PO that installed the overlays grounded them by loosely wrapping the wire around a metal part of the panel that goes above the obd port. Believe it or not this bad ground not even tied into the headlight system would cause the exact same issue for me. Needless to say my wife was a little irritated when the car i just bought lost all headlights at 55mph in the dark and I started screaming profanities in front of my son. Good luck.

 

My proud Camaro owners and friends I found the root cause for my problem, my problem was the high beam low beam switch it is the parts is attached in the steering wheel column I noted that this pieces has a sealed beam specs and I am using a blue halogen H4 this overheats the switch and start flickering (thanks to BigBadLou) the Solution is: I replaced the switch and I upgrade my head lights inhaling relays and taking the power direct to from the battery and power solve!! See links bellow I hope you this helps you.

http://www.austinthirdgen.org/mkport.../highbeam1.jpg
https://www.thirdgen.org/headlightupgrade

 

Let me add a simple twist to this. My issue is random flickering of my right hi-beam only. No issues with low beam...only when I cut on my brights, the right one will randomly come on, go off. Usually it stays off for a good while, then comes on, back off...totally random. Any ideas? Could a faulty multi-function switch cause this? Or the dimmer switch?

 

Logically, if the left beam works 100%, then the fault is not in power supply (headlight switch, wire, dimmer switch). The fault is definitely on the right side of the car.

Check the connector on the back of the bulb/light. They tend to come loose. If might be barely on, causing an intermittent contact.

Hope this helps.
Lou

 

or maybe even a bad bulb

 

funny thing i spent 1 week trying to find out this problem with my 85 TA. it would work fine on low beam but high beams it would flicker and all my gauges would flicker too.i kept on hearing an arcing sound in my headlight switch.next thing it would start smoking.so i unplugged it.realzing there is a short someehere.i looked and looked and looks but couldned find out where it maybe a short.i finally check the harness in the engine bay,next thing you know the harness had a short next to the brake booster.it started a small fire.after the little fire was put out, i repared thew damage wire ,and that fix my problem.hope that helps yall out!!