Oh yeah...nice catch, Roger...and the yellow wires should be connected to "T". Carl's going to have to issue a recall on this one. Since then we've also learned that the resistor is supposed to be 1.5 ohms not 1.35 ohms, and earlier AR-5's will have #6 and #8 coils instead of #10 and #11 coils. Attached is an "official" AR-5 schematic. Not as pretty, but more accurate. Roy AR-5 schematic (from AR).pdf