A blown fuse or the headlight switch could be At Fault ,also possibly a broken wire in the light switch wiring.
Bad dash ground.
Blown fuse Bad bulbs Defective or mal-adjusted stop light switch
Bad bulbs can be the cause of your reverse lights not working on your 1999 Toyota Tacoma. A problem with the reverse switch or bad wires can also be the cause of your reverse lights not working.
If a Passat 04 TDI's indicator lights are not working, check the fuse. A blown fuse can cause the lights to stop working.
A blown fuse can cause the dashlights and taillights to stop working on a 2001 Dodge 1500.
There are several things that can cause your 2000 Cadillac dashboard lights to quit working. The most common cause is a blown fuse.
Brake light switch has quit working. It won't be the fuses, as there is most likely a separate fuse for the high mount stop lamp.
Check fuses
If the parking/tailight fuse is good - then it may be a bad headlight switch No tail lights but the bulbs are working? Please explain.
A bad connection would cause a forklift mast to suddenly or slowly lower. Check all your connection wires to ensure they are properly attached and working.
probably the fuse is blown.
These lights have 2 different "lights" in each of them. This occurs frequently. Change out the bulb and everything will be working fine once again.