i did mine a little different than most people. i used a wire, small switch, and one of those U shaped connectors. i put the wire to ground, ran that into the switch, then from the other side of the switch i connected the U. i then cut off one side of the U. i can then plug the connector into the tc circuit and lock it up. then if i ever get a trouble code, i move the wire, flip the switch and pull the codes. i know it sounds like a hillybilly way of doing things, but no one but me has ever noticed the wire. and its very convienent.
where to lock it up is up to you, i lock mine off the line and have never had any problems doing that, it won't engage untill 2nd gear anyways. but some people only lke to lock it at high rpm. every car is a little different.
its great for the street to. driving at 35 when i won't go into od, you can flip the switch and bring the rpm down a little.v also lowers tranny temps.