Hi, I will need to install this seat in a car with ELR belts. The manual says that the locking clip is in storage at the back of the restraint. I'm not sure what I should be looking for, since the locking "clips" we use here are large plastic things that hang by a thread from the seat and not something that you attach separately to the belt as the manual indicates. Any ideas where exactly to look and what I should be looking for? It looks like a metal belt buckle or something? I'm really not sure...