[DaveR_GT]

I will have to go look at my brakes to see exactly where the line bolts up, but...

The brake line normally bolts up using banjo bolts. A bolt that has feed lines drilled into it to allow brake fluid to pass through the bolt. The fitting you are looking at in the pic on the caliper is for bleeding the brakes. I think there is another hole on the back of the caliper where the line should bolt up. I also recall copper washers used to seal it also.

Hope that helps.