If you have the DVD box of 9 then you'll need to install it using Pacifist.
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From Art of Sound:
To use Pacifist the basic principle is;
Use Pacifist to install each package within the Logic Pro mpkg. There is a button top left in Pacifist that says "Install"... select each package 1 at a time and install it.
Its actually quite simple....
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The installers won't run under Mavericks.
Once you get it installed you need to update your Logic 9 to 9.1.8. This can be downloaded from Apple, here, ( Logic Pro 9.1.8 ) then your Logic 9 will work on Mavericks.