Usually, the headlights are protected by a self-resetting circuit breaker located in the fuse block. It looks like a big aluminum "fuse". If it is failing or is being overloaded by accessory lights, the headlights will blink on and off. 2/5/09 The headlite switch socket may be burnt due to heat.
have you replaced the dimmer switch? if not that may be the problem. I had the same problem in reverse( brights worked but headlights didn't) water damaged the dimmer switch on the steering column once I replaced it all was good.
I have a '91 Eddie Bauer and I don't know if my answer applies to a 93 model but get an electrician to check your dip/high beam and indicator unit on the steering column. I replaced mine and the problem of no dimmed headlights was fixed. The light switch always seems to run hot with lights on. Probably a short SOMEWHERE. You have to trace the wires to find it.
i had the exact same problem and i also replaced the switch and relay. the problem was in the wiring right at the positive post on the battery. also had to clean up many of the fuse links as well.
I would go to the high beam switch next (test not replace)
the problem is in your high beam switch. there is a short in it and it needs to be replaced
Check the fuse for the headlights. It is probably open.
There are several possibilities; headlight switch, headlight breaker or fuse, connectors, dimmer switch.
just had same problem on 96 replaced head light switch in dash not had problem since wiggled switch first flickering matche wiggle
Had the same problem with my Grand Prix, ended up that the ignition switch had to be replaced. Hope this helps.
Check for bad ground
Yes, the dimmer switch could be at fault but, be sure the bulbs are okay before you spend anymore money.
I also own a 97 Ram 1500. Recently my headlights would go out when I tilted the steering wheel into the down position. I replaced the multi-switch (wipers, brights, turn signal) and the problem was solved.