Apologize if this is a repeat but I couldn’t find it anywhere. I placed a new stereo head unit in my 08 expedition. And I don’t want to run a separate Sirius antenna, but there is no sirius antenna connected to the back of the head unit, so wondering if someone knows if it is one of the wires in the OEM harness that is the Sirius antenna connection? Then I’ll just splice the antenna wire from the new Sirius tuner that attaches to the back of the head unit So it can work off the OEM Sirius antennae.( Has anyone done that?) thanks for any insight.