I am installing a Z-1 in my 2004 Avalanche and I am wanting to use the factory XM antenna instead of having two antennas. I have heard that it works but what exactly do I have to do for the install. Do i just splice them together or do I have to get an adapter? Please help me.

find the factory sat radio box, unplug the antenna and remove the palstics housing around the connector and plug it into your pioneer box.