This was very hard to figure out at first. The other comments were not very helpful so after finding Wilkes Base I wanted to post this.
You have to travel to the 'The Dune Sea' area which is in the western area of Tatooine. Once your in 'The Dune Sea' you follow the eastern wall of that area south. You will get to an area with of sand people camps. In there you will see a Bounty Hunter quest area that you can't enter. Just a tad bit south of that is a small easy to miss tunnel that you can go through headed east. You will come out into an area called the Central Chasm. Follow the road south it the area will change to the Southern Chasm. Then you will get to the Wilkes Base.
Good Luck Troopers I hope it helps others...
Worked like a charm! Thanks.