It is because you are getting an overload on your relay, often due to a serge somewhere or the fact that you may have a short in your vehicle's electrical system. I would say go to an electrician specialist who knows what they are doing to sort out the problem.
More that likely the headlight switch is bad. Turn your headlights on and when they start to flicker tap on the headlight switch real fast. If they flicker to you tapping on the switch, that's the problem. They had problems with that switch around that year. It's a pretty cheap fix and you can do it your self quickly. Can also be a sign of a failing alternator.
replace your head light switch
Loose wires, loose bulb, loose switch. Or maybe its because you live on a really bumpy road and it only looks like they flicker...
When turning headlights on, pull out on headlight switch knob.
replace the head light switch
We might need a little more information. Do the lights flicker every time you switch between low and high? Have you noticed that your turn signal stalk feels gritty or mushy? When you switch to high beams, do they ever flicker later, or just when you switch them? Do they ever go out entirely? I'm thinking that maybe the turn signal switch might be bad, but it's hard to say with no more info. FriPilot
Loose electrical connection. Could be in the wiring, ground, or switch.
replace the headlight switch its wore out replace the headlight switch its wore out
On the turn signal switch, click it towards you or straight back.The headlights are dimmed by clicking the turn signal lever toward you or straight back.
i just had this problem on my 93 Dakota it was the switch in the dash! it was a very simple fix the part was about $12.00 at autozone and it took about 15 min to fix.
Blown fuse, failed switch, broken wire, burnt out bulbs,
no