It looks as though someone has already installed a hard start capacitor on your condensing unit.
You could look for the same brand name and install it in the same fashion.
The oval shaped capacitors are for when the motor is running not starting. There will be one for the compressor motor (capacitor start/capacitor run) and the third with the small wires will most likely be for the condensing fan motor. (permanent split capacitor)
Check all the connections in the control panel and the motor termination box on the compressor.
Look for burnt wires and loose sta-cons.
Do me a favor and do this with the power off, OK?
