Does anyone know if the 1999 classic (RB5) has a radio dimmer cable? My stereo is far too bright when driving at night, and its a pain to keep going into the menu to dim it manually. My stereo supports auto dimming but I need to know which cable to wire it to, if there is one???

If there isn't one, has anyone managed to wire their stereo up to the "Bright" switch and use the stereos dimmer function that way?

Cheers