Alternator question, battery is discharging quickly.

[infernosg]

The stock S5 setup had the sense wire (larger white/blue wire) going to the EGI fuse in the main fuse block in the engine bay. The field wire (smaller white/black wire) went to the light in the warning cluster as mentioned previously. I left the field wire alone but since my harness is so cut up I spliced the sense wire into the headlight power circuit. I figure the electrical load increased quite a bit with the lights on so this would be a good source to use to tell the alternator to output more juice.