'63 Valiant V200 wagon - location of heater blower resistor

Off of my heater blower switch connector, there's another two-wire connector that's dangling:

connector.jpg

The wiring diagram indicates that this connects to a "heater blower resistor" somewhere under the dash (as shown to the right of the firewall bulkhead connector):
diagram.jpg
But there's no receiving connector in sight. Where should I expect to find this resistor - and if it's not there, where can I find a replacement? I haven't yet found the P/N in my parts book.

adTHANKSvance,
Dan