96 Maxima Cruise problem

I have a 96 Maxima SE 5 spd. Ok here's the deal my cruise works intermitton. I'll be driving down the hiway with the cruise on and then all of a sudden the cruise kicks off and the cruise light on the dash starts blinking until I shut the cruise off. Then after waiting 5-60 minutes I'll turn the button and try to set the cruise and the light starts blinking. Then latter on i'll try the cruise and it works fine for a while then kicks off again. Any ideas what's up? Could it be the speed sensor?