82 Toyota pickup 22r, Lights randomly turn off/on need help :(

For example, I'll turn the light switch on. they come on. then turn it off and back on they don't come on. I'll also be driving and my headlights will randomly go off. (only problems with headlights)

I think it might be a ground but not sure, every light works. But when I hit a bump sometimes my headlights go off, Aldo if I switch them off then on again sometime the headlights don’t turn back on.

If it's got the Glass fusses in the fusse box clean all the connections I got a 81 had the same problem cleaned them up and problem solved hope this helps you.