Saturn Repair Problems? Ask a Mechanic for Answers ASAP
The clicking you are describing is caused by low voltage, if the relays do not have enough power they can not turn off or turn on properly. As for what is draining the battery anything electrical can do this as you know you need to start by being sure the battery is not the problem or you are just chasing your tail. If the battery end up being good you will need to check for a draw, I'm sure you know how to do this if you are a aircraft mechanic, when a specific circuit is determined to be the problem you will need to disconnect each thing on that circuit to see which one makes the draw go away and then repaired appropriately.