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I have been having some strange electrical gremlins for a little while, have replaced battery and alternator, but they won't go away

What happens is that the hazard light flashes two or three times, sometimes the doorlocks make a low clunk sound, as if a halfhearted effort to lock the car.

I have heard that the factory alarm has a low voltage sensor, which will trigger the alarm if someone cuts power to it. If true this suggests I still have a problem somewhere in the charging system, or maybe a loose connection?

Anyone else out there experienced this, or have any suggestions?

Check all your earth points. What model car?

Thanks JBT, I will do that.

Car is NB8A.

How often is it dríven? How long between decent drives. If you regularly leave it more than 3 or 4 days, you may need to invest in a trickle charger (one that works via the cigar lighter socket should be fine) or the alarm system may drain your battery, particularly with microwave or (heaven forbid) ultrasonics.

Cheers,
Alf

It sounds like an alarm issue to me.