Why doesnt my blinkers work

fuse, switch or wiring fault.

Hi Mary ANN , need some clarification ,the fuse's for all these thing's you have listed , the tail lights, hazard, headlights, blinkers, cruise, brake lights, coolant fans are good ? If good what makes you think you have a short ? Explain ! Are these thing's not working ? That wouldn't mean you have a short . You could have a bad ignition switch !

sounds like a bad ground or a break in the wire harness

Well, if you have power on the tail light circuit you should have lights. The tail light circuit is different from brake and turn signal, and they both use the same ground.
Are you sure you have power on the tail light circuit to the bulbs ? And are the parking lights out for the front too ?

check fuses for brake lights if fuse is good check for power to brake light switch with test light.

I am unaware of what a "CO" display is.
Now with the blinkers, hazard, horn and brake lights not working that may be the multi funtion switch (blinker switch) that is located inside the column (where the blinker lever attaches).
Obviously the blinker, hazard and horn will all work off of something in the column. Brake lights, you may think a switch on the pedal.

the brake lights do work with that switch but when you have the kind of tail lights where a turn signal light shares the same bulb as a brake light, the brake light is cancelled for the turn signal by running through the multi function switch inside the column.
The third brake light does not blink so its not on that same circuit.

I've worked on these the first drove me crazy. its the turn signal switch every thing runs thru these. head lights, turn signal, brakes. except the third brake light. it runs directly from the brake switch. go figuare

TEST FRONT RIGHT BLINKER CIRCUIT AND REPLACE THE BULB,,WITH PROPER BULB...A DOUBLE CIRCUIT BULB IN A SINGLE SOCKET WILL DO THAT ALSO A SINGLE SOCKET BULB IN A DOUBLE SOCKET HOLDER....CHECK LEFT SIDE BULB FOR ACURANCY

check for the complete fuse box and search for short circuits. Check the fuses and the amps of each. Did you change the battery for a new one? Did you install any device not OEM? An alarm? Check the cable system. If this is ok, scan it.

check hazard fuse or make sure the hazerd switch is dis engadged. mine was the same problem just cant use the hazard