help req turn signals crossed

I assume that you have checked the rear one that isn't flashing to make sure the bulb is good?. If so then I would look through the wiring harness under the hood for a short probably close to the lights. Even so the both rear ones should flash as well. Double check that the rear signals both work. If you find that the rear light isn't working then start checking all the logical places, under dash, going through firewall, close to lights, any sharp bends. Basically the whole wiring harness. Can be very time consuming tracking down a short.

Darrel Doehr wrote:

Might check to make sure there aren't any single element (1156) bulbs in a dual element (1157) socket.