[KevinH1990]

Blinkwatt-

Did you buy one?

Here's some information I found on RennTech from a post by skymast concerning installation. He had a C4, but the connections are probably the same for a Boxster with the 490 package.

Update --

for those who come after me ....

I have a 99 C4 (late build), CDR-220 w/ Amp.

1) It is plug and play BUT you do need to connect / splice the C6 and A5 wires to power the amp to get sound.
2) I may have had a bad CDR-220 BUT the TP sounds much better than my CDR-220.
3) The amber display (you can buy green and red) is a perfect color match
4) Looks wise, this is a total factory look (not a cheap aftermarket)
5) This is literally a 20 minute install ((but I didnt install the reverse wire)
6) While it does not have the typical big display screen, it is very easy to set / use.
7) Very Important for the directionally challeged. IT HAS A COMPASS DISPLAY!!!!!!! This was worth the $440 alone to me!

Hope this helps!