Hmm-the sound of crickets is likely due to the blower not being included in the wiring diagram, as it is an accessory. Looking at mine, the wire going into the blower motor is 14 gauge, and of a nondescript tan color. Not sure if this is related to its actual color or age. As an accessory, there might be variations in this.
I scanned the wiring diagram for the '53 Manhattan once- if you need one send me your email and I'll forward it.