1991 Nissan Maxima

I have a Maxima 4dr SE sedan and recently the tail lights and the front lights stopped working. Both the head lights work OK in high beam but the right side low beam head light does not work. I am OK with using high beam head lights since they are not as powerful as the newer models. But the tail lights and the front lights do not work and I don't know why. This has been working fine until the past week. Any suggestions? Cash R.