1999 ford galaxy reversing lights and rear back windows?

hi i own a ford galaxy 2.3 petrol and the reversing lights havent worked since i have owned the car i thought it might be the switch so i have changed that and still no joy i have checked the fuse and that is ok and i have checked the wires and they all seem ok but still no joy also both the rear windows no longer go up or down luckily they are both shut probperly just pain when i could do with them being open. any ideas