<div class='quotetop'>QUOTE (SNAP @ Jun 9 2008, 06:04 AM) </div>
You can use the single pin bulbs by soldering an extra wire and spade connector to it. It's just an earth contact.
I found that suitable single pin bulbs were significantly cheaper, too.
I used H3 55W, if I remember correctly, but they come in higher wattages.
I think H7 is a standard headlamp bulb, so may be too large.