DirkyDirka

Hello all...umm ya i got a s2000 type start thing on my rx7 that the person had installed....sorta hard to figure out but once used to it not that bad but anyways whenever i drive somewhere once i turn car off....if it doesnt turn over first try when i get back in it all the lights inside fade and it sounds lke battery is dead.....then if i leave it there for like 30 minutes it starts again but then i cant turn it off or it wont start AGAIN so like if i goto store and try start to come back. when i goto start it just makes a clickign noise...... plz lmk if anyone knows wut problem is...i hope its not alternator....maybe just batterY?