They should be long enough you're going to have to get to the PCM it's inside the airbox remove the panel filter and just get the intake out of the way. Then remove the 2 8mm screws that are on top of the airbox and remove the top so you can access the PCM, it's just clipped in pop it out and the harness will come out twords the middle of the engine above the fans.

Disconnect the battery just in case

Meet your DMM to the lowest ohms scale you have (not the beeper) and touch your leads and wire (described below). This is lead resistance. Write that down.

use a small paper clip and bend it out so you can slide the point between the insulator and the wire and make contact with the pin. If your leads are too short grab a piece of wire to make up the difference, and wrap some around one lead the other end probe the wire you want to check you should have almost 0 ohms subtract the above reading and that is the net resistance of that wire. It should be around .5 ohms or so. Do the same with the other wire. That should tell you if you have a wiring error.

Jeff

edit: as far as reprogramming the computer you will have to do a security relearn. I am actually running an 04' GTP PCM in my 05'. I detailed the instructions in the 04+ section.

http://www.grandprixforums.net/threa...n-changing-PCM