On a 1999 GEO Tracker, a bad fuse can cause the headlights and dash lights to blink. A bad voltage regulator or alternator can also cause lights to blink and flicker.
Blinking lights on dash and exterior lights may indicate a bad ground wire or a faulty headlight switch. Both would cause those problems.
Possible ground issue at the taillights.
Most likely a fuse.
A bad ground wire will cause dim headlights, or will cause lights not to work.
A loose or corroded ground wire can cause your 1995 Jeep headlights to blink on and off. Make sure the ground wire is tight and free of corrosion.
probably the fuse is blown.
Check all of your blinker lights. There are two in each tail light, one in each center signal, and one at the corner of each headlight, a total of 8 lights should blink when you have the flashers on. If a bulb is burnt out, it will increase the blink rate. Also, installing LED's in the tail lights will cause the blink rate to increase.
Most likely poor wiring.
I would replace the headlight switch as Ford has had their share of these problems.
If by "dim headlights" you mean low-beams... the bulbs are bad and must be replaced.
You will have to check all the door sensors.