Usual suspect is the rear sunroof drains either clogged or unhooked from the sunroof cassette... the water just runs down the headliner/d-pillar cover and drips on the amp. There are a few threads on this for the E53, maybe track down some of the threads as I believe some had pics and all.

__________________
"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

You make something idiotproof, they'll make a better idiot

You think professional is expensive, just wait until you pay for amateur.

Never let your sense of morals prevent you from doing what is right.

Examine what is said, not who speaks.

X5 pics

RIP 4.6is.....

2003 4.6is