Cartridge leads?


What do the colors mean when the leads are Green,Red,Blue,White, which ones are HOT and which are Common?
128x128mattmiller
White = Left, Blue = Ground                          Red = Right, Green = Ground
Then again perhaps not - my Koetsu cartridge pins are plain and unadorned. See MC's comments above.
Since we’re on the subject, I’m having unequal level on one of my turntables. Could this be a result of reversing the grounds on each of the channels, or does that matter. Also if it does, what would that do?