On US sold cars (non-DRL) there technically is not a high-beam relay. The power for the high beams is activated by the stalk switch and when you pull it the low beam relay activates sending power to both the low and high beams together. The reason the high beams don't stay on all the time with the low beams is that the ground path to the high beams is controlled by the normally open stalk switch contacts.
To say it another way...if your low beams are already active then your high beam are getting power too except that the stalk switch is NOT providing the ground path for the high beams so they stay off until you pull the switch and provide a ground connection.
Sounds weird but that's the way it is on all 2G's.
This is also the reason that people who run HIDs can't flash their brights during the day without activating the HID low beams each time (hard on the ballasts).
