"mc" wrote in message
...
I'm replacing the batteries (2 x 12V, in series) in a Best power supply
from the early 1990s.

Obviously, I have a negative lead, a jumper to put the two batteries in
series, and a positive lead.

Attached (with tape) to the red positive lead is a white wire with a
smaller female spade connector on the end of it. The person who
previously replaced the batteries did not connect the white wire to
anything. What should it go to?

I found the battery replacement instructions on www.bestpower.com and they
say not to connect the white wire to anything at all -- which leaves
completely open the question of what it was originally for.

Its connection on the circuit board is labeled SM or WS depending on whether
you read it right-side-up or upside-down.