Audio Systems: 99 Accord Factory Stereo Change, factory model, slave unit

Question
My 99 Accord came with a tape deck stereo.  I intend to purchase a factory CD stereo from e-bay (with anti-theft code) and replace my tape deck.  I bought the car used, and it didn't come with any manuals.  So, I would like to know if I buy a factory model, that is listed to fit in my model year car, are there certain ones that will work without any additional cables/harnesses?  Are there certain ones that will require these?

I'm specifically looking at:
39100-S84-A300 - 6 disc in-dash
39100-S84-A210 - single disc in-dash
or the "CD Slave" unit, single disc.


Answer
Ryan,

 be careful with ebay OEM units some are stolen , you get em and cant use them because the theftloc or other system is engauged .. just make sure the place you buy from is legit... now as long as the seller says it fits your model .. you will need no other plugs/harnesses .. but i would get the part number and call honda about it just to make sure before you dive into a purchase .. hope this helps you out if you need naything else let me know

thanks