You probably replaced the emergency flasher, so remove it & try your flashers; if they don't work, reposition the flasher & try your flashers. If they work now, then try to locate the turn signal flasher (ref. repair manual). Or...heaven forbid, you have a short or ground in your turn signal wiring harness (somewhere), where only an ohm meter and knowing how to use it will locate it. Good Luck!
Check the flasher for the turn signals which is under the dash on the left side of the steering column . It is different from the emergency flasher.
If the turn signals flash quickly, its because a bulb is out. Have you tried replacing the bulbs? Have you verified the replacement bulbs are indeed good? Sounds like a bulb or two may be out. The flasher depends on the bulb's current to set the flashing rate. If a bulb is out (or disconnected for some reason) the flasher usually will flash quickly or not at all.
The directional signals and the emergency flasher each have their own flasher unit. They are the same type of flasher and should be beside each other under the dash.
If you replaced the flasher on your 1999 Mercury Cougar and your turn signals are still not working, you should check the turn signal fuse. This fuse is located under the dashboard on the driver's side of the vehicle to the left of the steering column.
check all your bulbs and fuses
The signals and the emergency flashers have separate circuits, separate fuses, separate flasher relays. Start with checking the fuses, the bulbs, the signal flasher relay and wiring and if it still doesn't work it may be the signal switch is bad.
check the bulbs, check the fuse then check the flasher, if they are still dead the signal switch may be at fault.
Answer ScottmAKE SURE YOUR FUSES ARE GOOD AND YOUR WIRES ARE NOT BROKEN TO THE SOCKET. CERTAIN DODGE APPLICATIONS WILL MAKE ALL LIGHTS NOT WORK WHEN 1 IS OUT OR BROKEN.
Some vehicles has a flasher relay for the turn signals and another one for the hazard lights. Are you sure you replaced the correct one?
have you tried replacing the flasher u need to replace the flasher can for the turn signals there are 2 one for hazards and one for turn signals usually found in the fuse box, and cost about 3 bucks
on the Chevy beretta there are 2 flashers one is right next to the steering column to the behind the plastic dash piece,this is your turn signal flasher replace it and your signals should work.
First check all the bulbs. If all the bulbs are good replace the signal flasher relay. If it still doesn't work it may be in the signal switch. The signals and the 4 way have separate circuits, fuses and flasher relays.