There are two types of plugpack. REGULATED and unregulated. Make sure you get one that is REGULATED and higher than the total current of the lights. Also, get a fused one if you can.
If you got an unregulated one, if the full current wasn't drawn from the lights, the voltage would go up, this increased wattage could blow a "bulb".
EDIT: Also, if the lights only display their wattage on them, just divide that by 12 to get amperage. (W÷V=A, VxA=W, etc)
If you got an unregulated one, if the full current wasn't drawn from the lights, the voltage would go up, this increased wattage could blow a "bulb".
EDIT: Also, if the lights only display their wattage on them, just divide that by 12 to get amperage. (W÷V=A, VxA=W, etc)