Microblog CastellanoHi!
The wires on the loudspeaker (beeper) of my old AT box broke.
I need to if pin 1 (red) of connector is positive or negative, to solder the wires again.
Maybe @Gammitin can help me?
Gary 
@microblogc @Gammitin convention is red = +ve, black = gnd
But it doesn’t matter if it’s just wires going to a speaker (unless there’s more than one speaker, in which case they all just need to match so they’re not out of phase with each other)