Instrument flashers out

The front turn signals and dash turn signals use a different part of the switch as the rear. The rear has to go thru thru the brakelight switch and turn off either the left or right brakelight depending on which way the switch is positioned, the front just turn on and off the lights. I have opened the switch and it is a slick bit of engineering. That is how it works and the front might not work but the rear will and visa versa. Switch could still be bad. MT