Controlling Spirit

This is the Pre-Quest to the Exar Kun Heroic.

Controlling Spirit Part 1
In the guild hall talk to the Corellia university teaching assistant to start the quest, One you got the quest you will than travel to Corellia in Tyrena to talk to Professor Wagglehorn /wp -5469 -2984

Than travel to Talus were you head to the Off-site Research Outpost at /wp -465 4440 once there it will update that you will have to check the dead researcher for a datapad.

After you Power-up the datapad click on the communication terminal /wp -449 4434 to complete it.

Next is Controlling Spirt were you will need to find Magnus Grenz given the /wp -1837 6609 once there talk to Magnus to start the spawn.

After killing his minions and finishing him off head down into the bunker and click on the data terminal /wp -1822 6651 after that return to Professor Wagglehorn.

Controlling Spirit, Part 2
Now with the first part of the quest done head to the Mining Outpost on Yavin IV were you will need to head to the Archaeological Dig Site. /wp 4846, 5575

Once there talk with the Rebel Trooper /wp 4927, 5593 he will tell you that you will need a Medallion of Exar Kun to get into the catacombs beneath the temple. Kill the cultist around the dig site to get the medallion once you have it return to Professor Wagglehorn.

With that done that's pretty much it he will tell you to head to back to Aurillia and talk with the assistant again to finish the quest. You also have access to travel to Exar Kuns instance.