draw a quick sketch of how your shepherd's crook retaining wire is routed PRIOR to removing it from the rifle.
this wire is located inside the left receiver wall and is seated in the trigger and hammer pivot pin grooves in order to retain the pins from walking out of their holes.
there is a small spring between the trigger and disconnector. be careful as you remove the trigger pivot pin that this spring does not go flying into the cosmos.
lastly, tapco's parts come with no instructions because the cheap, sleazy bastards are too tight and too inconsiderate to include them with the parts. honestly, the idiocy of selling parts that affect the safety of a firearm without including basic instructions is beyond me.