No Sound in Left Channel From Cartridge???

Well tonight I was setting up my new P3 with a Grado Gold cartridge. This is the first in about 20 years in setting up a turntable and I know at first I had the wiring wrong on the cartridge and got no sound from the right channel just a dull "hum". I finally figured out the correct wiring and now I have no sound from the left channel. I had another cartridge (Micro Acoustics 2002) and installed it on the P3 and it both channels worked fine. My first wondering is did I "fry" the cartridge when I first wired it incorrectly. Or could it just be something wrong with the cartridge. It's amazing how fast excitment turns to frustration.

Thanks all~~