2000 Ford Mustang Blinking DRL

My DRL started blinking a couple months ago. When it began I could stop the blinking/flashing by turning on my headlights. Then even with the headlights on, after about a minute or so, they would start blinking again. Now even whent he highbeams are on they will blink. And eventually now, when headlights are not on, they will fade away and shut off totally for a while, or untill the car is "restarted." The grounds for the headlights are good, and the Owners Manual for the 2000 mustang is utterly wrong about the fuses and such in the power distribution box under the hood, so that did me no good. Please help, is has become dangerous to drive at night.