[Ron Ramirez]

"It lost me at ungrounded side of the volume control "

Okay. Looking at the back side of a typical volume control, you will see three solder terminals.

The terminal on the left is the grounded end (this terminal goes to B- in AC/DC sets instead of to the chassis).

The middle terminal is the wiper arm of the control.

The terminal on the right is the "high" or "ungrounded" side of the control.

Pretending your Pilotuner is a phono jack, the following link to another Philco Phorum thread (how to connect an Ipod to a Philco radio) will show you how to hook this up:

http://www.philcoradio.com/phorum/showth...p?tid=2095

Instead of the mini-stereo phone jack, you'll hook your Pilotuner to the volume control. You can install an SPDT switch between the wire normally running to the ungrounded side of the control (which goes to terminal (3) of the jack in the link above) and the new Pilotuner input, with the center of the switch going to the ungrounded end of the volume control. This way, you can switch between radio and Pilotuner operation.