clicking

Hi guys, im new to this forum. I looked through the posts but couldnt see anything similar to this weird problem im having. I have a 1997 R33 GTR and on about 3/4 to full lock only while reversing you can hear a distinct noise that sounds exactly as if there is a place near the front two wheels...

I'm having a few issues; 1. Fluid in ATTESA Resevoir will not settle to bottom of resevior, causing a low level. (screen clogged)? 2. Clicking noise in trunk...Probably related to problem 1. 3. Alternator stops charging at random intervals. 4. HICAS light and Battery light illuminate. Could...