highest speed blower motor works.
Other 3 speeds do not.
I removed what I think is the blower resistor.
It has 6TT 220 stamped on it.
It is black plastic ( bakelite ) about 1 " x 3 " and has 4 connectors on one side and a square metal piece about 2 " x 2 " on side that sticks up into air stream.