does any one have a connex 34HP- ANF radio that knows how to turn on the back lighting. it comes with this on the 3400 also but has a button to change the colors and turn it off. the 34HP- anf has a button in the spot the 3400 has for the back light but that button says ANF. just need to find out how to turn the back light on. a friend bought one used and can not figure out how to turn the back light on.