I have 1992 LAndcruiser and have same problem. I have been trouble shooting on and off for months now, I suspect a fault ground, does your Volt Meter fluctuate when you use the flashers? I have noticed unstable voltage readings...
why do my lights flicker and interior lights flicker
Your lights may flicker because they power is really low. It is very common for them to flicker when there is a storm out.
because you did not trun the lights of when you closed the car
Flickering lights, on a Cadillac STS, is usually a sign of a loose wire. When all of the lights flicker, it is an indication of a loose battery ground cable.
no
Its the hash-slinging slasher.
The alternator is on its way out.
problem resolved
Possible electrical problem
In most vehicles flickering lights is a sign of a failing alternator.
it is caused by the alternator voltage regulator switching on and off to charge the battery, this problem is encountered on many makes of car, you may not of noticed it before prior to exchanging the battery.
mabie they could be burning out.