OP...are these Hella optilux bulbs? If so I know they make them in both 55W and 80W versions. If you have a true 80W bulb (as opposed to a 55W which says it has 80W 'output') then you must upgrade yur wiring harness/connectors. The 80W will draw a lot of current and you may melt your wiring harness and connectors!!! So make sure you upgrade your wiring harness and for extra safety keep the OEM fuse. It will probably not be a problem till you start using the 80W bulbs on warm summer nights, te harnes will get very hot. First make sure your bulbs are actually 80W and not 80W 'output'. I had 80W bulbs in my old Audi's high beams (and HID for low beams) and used this info to do the wiring upgrade, not sure how easily it would translate for the Legend.
AudiWorld Forums: High beam headlight wiring upgrade info and write up. Graphics rich.