How the driver can fully control the back windows and the back can only control their window when the driver isn't controlling it. The LEDs determine the current flow for the window motor. One LED is up and one LED is down. The left switches is the drivers and the right switches is the passengers. The upper switches is up and lower switches is down.
RED LED---------------UP
BLUE LED-------------DOWN
LEFT SWITCHES-----DRIVERS UP/DOWN
RIGHT SWITCHES---PASSENGERS UP/DOWN
