The headlights on my 1997 fiesta only work on full beam could you tell me what the problem might be.

Sorry only two lines ahve come through ,please answer post and repeat question in full

Headlight relay.

You have separate fuses for high/low beams. Check that.

duplicate question

Rodeo has an opening where the blinker switch go into the steering column and gets full of dust and ect. Take a can of computer keyboard cleaner and stick the spray tub down into the column and spray while working the blinker switch up and down and or compressed air to get the dust out, works everytime.

ceck the bolbs it self or the fuses.

Fuse 22 and fuse 23 are left and right low beam headlamp fuses located in the PDC. 23 and 24 are high beam fuses. There is also a low beam and a high beam relay in PDC as well. If no headlights work I would check for main switch or multifuction switch (wiper/high beam) since each light has its own fuse and relay.

Might as well check the orange headlight control unit first, as it is an extremely common issue, and will only take you 20 minutes. Here is a step by step tutorial with pictures to examine and repair it. The tutorial is from a 1995 900 but is fully applicable to your car.

The same bulb in a lot of applications controls both the high and low beam. Generally the low beam portion will burn out and for a short time you will be able to use the high beam only. I can't be certain which headlight switch that you checked, but the most common solution is to replace the headlight bulb. The bulb is on the inside of the headlight lense and is accessible by opening the hood and peeling back the rubber cover that covers up all of the headlamp apparatus. Depending on the model of vehicle they are mounted in there differently. Make sure and change both at the same time. It is generally cheaper to purchase new headlight bulbs as a (2) pack and it never fails if you change one the other will burn out in a week. Hope this helps

headlight relay is the problem. it is located in dash above radio in a fuse cluster. local autozone can tell you exactly