On my old JPS the red lights on either side of the green turn-signal-arrows were: Right = oil pressure, Left = generator. The only other light that signified anything was the blue light for the brights. I know some manufacturers use the other red lights in the left pod for things like alarms, etc.
I'm not 100% certain on this, but I believe the VS cars have the red lights in the tach wired the other way: Right = generator, Left = oil pressure. Maybe some other VS owner can verify?