1998 buick lesabre keyless entry

I, am trying to locate the following wires on my 98 buick lesabre for a ke-30 keyless entry hookup

1. the light GREEN/ black for the dome light (polarity -)  2. the parklight  brown (polarity +)  3.the black wire for the horn  (polarity -)  4. the RED / black polarity - for the door lock and the ORANGE / black for the door unlock polarity -. I have a vehicle wiring diagram but when i try to locate the wires there is 3 to 4 of the same color wires for what i am trying to hookup, if anyone has any information it would greatly be appreciated.  

Get out your test meter....this is the only way to know for SURE what wire is what. Specially with mutiple wires the same color.

Good luck