It is all installed in my C5 convertible (and the same tuner and one subscription is used in 2 cars and 3 home/office locations. The antenna is very small (1/2 size of computer mouse and simpley is sitting on the dash next to the passenger side windshield post - works fine. The little tuner sits on top of the closed cup holder. FYI (I also posted it earlier): see below & let me know if you have other questions.
Patrick in DC
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I have installed the Delphi XM SKIFi in my C5 Convertible, Volvo Wagon, 2 in home and in my office – all with one tuner ($10 a month once). It is fantastic. In the C5, you need 2 harnesses to make it work into the BLOWS OEM Head unit. As you know, you do not want to do the FM modulator. The source for the 2 harnesses is LOGJAM ELECTRONICS.
I. LOGJAM:
Web site (the exact page your need) and contact information.:
http://store5.yimg.com/I/logjam_1714_750616
LOGJAM ELECTRONICS / P. O. Box 211 / Anderson, IN 46015 / (765)644-1251
II. The items you need:
(1) PIE GM10-AUX Auxiliary GM10AUX 1 69.95
Input Converter
Subtotal 69.95
Shipping 6.50
Tax 0.00
Total 76.45
(2) PIE COR-HAR Cable Harness
Amount : 76.45
(3) You may or may not need a Ground Fault Issolator - Radio Shack $14.00
III. INSTRUCTIONS:
I pulled up the passengers footwell carpet and panel along with the right kickpanel. You will probably have to remove the small little hinge panel first which is above the kick panel. Both of the plugs that you will need for the harness are lying in the lower right corner of the passenger footwell. The 3 wire plug has a little piece of white tape on it, the other plug is pretty close to it but its secured to the frame with one of those plasticbarbed push plugs.