[Ron Ramirez]

I just looked at the factory data for this set in the 1941 RMS Yearbook, and an under-chassis view is there, with the tube sockets labeled as to which tube goes in each socket.

You might find this page helpful as you go through your 41-226 Sled:

http://www.philcoradio.com/notebook/41226.htm

You will notice that there is an under-chassis diagram on the page in the link above (scroll down to the bottom to see it, it's on there twice). This one shows how to reconfigure the power switch so that the hot side of the line is switched rather than the neutral side.