07-03-2018, 12:55 AM
The "directionals" are on your electrolytic condensers. These are polarity sensitive, and will not work if installed backwards, in fact they may heat up and explode! The arrow with the "-" sign points to the negative direction and should be connected to the negative side of the circuit. In a few instances, this may actually be a less positive place in the circuit, so study the schematic and the existing connections carefully.