Weird question about lighted rocker switches.

^^We may be misunderstanding--I'm talking about a lighted switch. I'm guessing you are talking about a separate LED? Of course you can wire them up, but he is controlling the ground end of the circuit, so the LED must be reversed to operate. That is, a separate LED would be easy. Just switch the leds

OP look around, see if there is a lighted switch which is two pole (six contacts). That might have an LED configured to one set of contacts, and you could wire one set to operate the LED and the other to operate your grounding circuit.