loud hum

[Paul Birkeland]

One black wire connects to terminal 20, the other black wire connects to that black wire.

[bucketofguts]

I could not make finer mechanical connections. Solder joints  shine like the finest silver. I still have the same values.

[Paul Birkeland]

I could not make finer mechanical connections. Solder joints  shine like the finest silver. I still have the same values.

But you can't.  If you have ~90V DC across a piece of wire, the wire will heat up until it melts and falls apart.  One of these wires has to be broken or loose.

[bucketofguts]

I will keep working. Thank you Paul.