gma23boys

I'm cleaning up a vintage Pfaff 130 machine. I have rewired the motor and am now trying to replace the wiring to the light. I have mostly disassembled it, but cannot figure out how to remove the knurled switch on top of the light. Unless I can remove it, I cannot solder new wire to the socket. Does anyone have experience with this?

I have photos, but don't know how to post them from my iPhone.

Thanks. My name is Carol.