use pin #60 or #87. i myself used #60. when you get the computer from behind the pass kick panel take a look at the back of the plug. you will see that they are numbered. find a good clear number you can see and count to the wire you need to splice. all the wires are color coded for whatever purpose they serve. if you want to use pin #60 the wire will be gray with a light blue strip. if you use #87 it will be red with a black stripe.
when i cut and spliced into #60 i did it far enough away from the pcm to make sure that if i remove my a/f gauge then i can splice the wire back together easily.
just take your time and look twice before you cut and you should be just fine.
pm me if you need any more help.