97 Expedition power locks dead

My power locks stopped working completely (remote or switch, lock or unlock.) I didn't have any problems with them until 2 days ago, after work it wouldn't unlock.
The fuse is good (#3 under hood fuse box), I can't find the relays, but since there are 3 of them I don't think they are the problem. I have power at the fuse and 2 wires going to the PDL switch, I also have ground to 2 wires going to the PDL switch. Its probably as simple as a broken wire or corroded connector, but I'd rather not pull the whole dash if I don't have to, but I need to fix it so I can open the rear hatch which is locked and its lock cylinder is gummed up so I can't use the key. Any thoughts would be greatly appreciated.

I unplugged the RAP module and shorted power and ground (separately of course) to the lt blue/white wire, but it didn't lock/unlock. Is that the right way to bypass the switches? I still haven't found the relays, but again I don't think they are the problem because they would have to have all gone bad at the same time.

I found the problem, I also made a video showing how to get to the PDL relay block. Here's a link to the entire discussion that helped me find my issue, there is also a link to the youtube video in it. http://www.ford-trucks.com/forums/1426489-where-is-the-power-lock-relay-block.html#post16137885