My Ford Ranger is a 1989 XLT. The headlights do not work. All other lights do. Fuse is good. Headlights are good. I put a volt meter in the terminal and no voltage on either side. Heard it could be the dimmer switch. Is that true or is there something else?
Thanx

probably your switch.
remove it and test it in its functional stages with a voltmeter or test light, if ya get power in the switch start tracing the headlight wire from the switch forward. its a big wire not to hard to follow. Also I believe in the 89 there is still a fusable link for your headlight wire you might want to try and verify that?