hi Klaus,
Thanks for the reply and research. Looks like a handy part when you have dual DVD players in the back. However, I might be more conservative and go with the tested part you already pointed out to me:
http://www.discountcarstereo.com/detail.aspx?ID=617
There's already an external kill switch to take care of the "XM noise". I'm going to use that switch to toggle between the two DVD inputs which will be very seldom - i.e. two small kids, load the DVD in the closest headrest most of the time.
So, looks like adding the DVD player into the '05 NAV screen is not an issue. However, I still don't understand why one CD player would not introduce XM noise while the other (one you pointed out) does. My understanding is that you hook up the CD player with a T-connector. This kind of connection on any electrical bus has the side effect of introducing noise. However, if the T-connector is properly matched for impedance then the introduction of noise should be "OK".
Does the DVD player that you pointed me just have a better impedance matching T-connector? Also, how many physical inputs are there on the radio? From what I read, there are three ports: XM, CD, and Radio. The suggested solution would hook up the DVD player to the Radio port and does the external CD player just hook up to the CD port? If the XM port is not involved, how can there be noise while playing XM when the CD shuttle is on? The dealer indicated that there is just ONE port which they used to hook up both the external CD player and DVD player using TWO back-to-back T-connectors.
Kind of odd that the "right" solution for hooking up external DVD and CD has not propagated through the Hummer community. It's a real weak-point on the truck.
At this point, my plan is to order the 6-disc CD player and the SVG-707 input adapter from Discount Car Stereo and keep my fingers crossed that the XM noise issue will disappear.
Is there any merit to buying the Caddy Escalade '03 CD changer that you installed on your own H2?
thanks a bunch in advance,
Greenhummer
'05 Lux H2 with a wannabe "slick" integrated NAV/CD/DVD solution!