if i remember correctly, it works as follows: first you gotta loosen the pinch-bolt assembly that attaches the front brake rod to the handlebar links; for the rear, do the same thing. whack quill bolt, don't smash thumb.

make sure you tape and label EVERYTHING; the first time i took one apart, it took forever to figure out where the bolts went.

after everything's off and clearly labeled, measure them up against your donor pair, and hope the rods are the same. if they're riveted together at the ends, you could drill them out, and then find a new set of stainless rivets to put in with four nylon washers per bolt; that should make the links move easier. hell, if nothing matches up, i would just try putting nylon washers and sleeves on your original pair; mcmaster carr has a ton of that stuff.

take pictures with good lighting for posterity, and post them!