Weird, the belt on your passenger side looks like it has the correct connecting latch, but the latch on your drivers side looks like its from one of the rear male latches. Here are some pictures that I just took to help you out a bit.
Here is what the top of the connecting latch looks like from the shoulder strap.
This is the connecting "snap" that hooks into the lap belt.
Here they are laying next to each other, the "snap" latches into the holes on the male side of the seat belt latch just to the right of the button release.
This is what it looks like latched.
Latched from the underside.
This is the male end on the rear belt like I was talking about above.
This is the fragile plastic retainer that bolts to the car under the belt through the hole that you can see on the far end. The whole assembly covers the bolt for aesthetics, and the hole that my fingers are through is the hole that the "snap" connects to when you don't want to use the shoulder strap.
Remember, on this forum, there are no stupid questions. Not one of us (well maybe a few

) are experts, and we can all learn from each other at all times. Good luck getting this mystery connection on your driver side figured out.
- Nik