volvo low voltage alarm

Regular as in the little ones? I'm not sure what they are but they sure do draw some voltage.

 

I HAVE A 98 VOLVO TRUCK WHEN I TURN ON BATTERY GAUGE READS 12.3 AS SOON AS I TURN ON AC AND LIGHTS GAUGES GO DOWN TO 11.9 AND SAYS TOO LOW.. I RECENTLY PUT ALL 3 BATTERIES AND ALTERNATOR NEW AND STILL HAVING SAME PROBLEM

 

Check the alternator with a voltmeter, just because the alternator is "new", doesn't mean it's charging properly.

 

I recently had this problem. After talking to a few friends I found that the battery cut off switch in the battery box was causing the problem I disconnected it and wired directly to the batteries My problem was gone.

 

Does my 1999 volvo vn have lvd?