been a while since i changed some if i remember correctly, they are cliped on with retainer clips, you unplug them unclip them take em of put the new one on clip it and plug it back up.. mark your wires and the injectors,, your probalby going to have to take the fuel raill of, so you can replace the o rings and insulaters,, take a picture of it berfor you take it apart,, it will help you in putting it back together,, when you get the fuel rail off then you rplace your injectors,, its not rally that hard as llong as you take your time,, make sure that your release the fuel pressure from the rail,, and tag an mark all you wires,, so you know where they go when you put it back together when you put the rail back on it torgs to 11 to 15 foot punds,, after you get it back on make sure you injecters turn freely if one wont turn somthing is wrong they are supposed too turn freely.. when you put the new insulaters and o rings in put a fine coat of gas on the o rings,, don't for get the grommets,..
sevety9