IF I've understood that correctly, you're testing with Multimeter set to detect up to 10 amps.
Your 0.1 reading equates to 1.2 watts (Amps X Volts=Watts), doesn't sound like a problem to me, the alarm will be using more than that.
IF I've understood that correctly, you're testing with Multimeter set to detect up to 10 amps.
Your 0.1 reading equates to 1.2 watts (Amps X Volts=Watts), doesn't sound like a problem to me, the alarm will be using more than that.
It ain't over till the fat lady sings or in your case the battery keeps its charge for a reasonable amount of time.
I'd test the battery with the multimeter, fully charged you should be getting 12.4-12.7v, this would be with the battery isolated from the car (take off one of the connectors to do this and test across the battery terminals).
If you re-connect the battery and test again 24 hours later and the voltage has dropped to below 12 then you need to look elsewhere for the current drain.
The other thing to do is make sure the battery is ok by charging it and leaving it for as long as you can isolated from the car, if the voltage is still dropping then the battery is the problem.
