First, I'd NEVER measure car battery draw in this way. If you have a short or a mishap, your multimeter is dead.
I'd do the following:
1: disconnect the battery grund lead.
2: insert a 10 ohm resistor between ground lead and battery pole.
3: measure the voltage over the resistor.
This is safe, the worst thing that can happen is that the resistor burns.
That being said, 95 mA of dark current is far too high. Rule-of-thumb for cars is 50 mA max., 20...30 mA typical. Give the aftermarket alarm system to someone you don't like, and check your radio´s consumption.