When the headlights are off the turn signals work. When I turn the headlights on the right turn signal blinks fast. What is going on?
Someone at one time has replaced one of the bulbs with the wrong one... It may look the same , but isn't the same..( ex. a 3057 was used instead of a 3157) . Again they look the same but are not the same. And yes I have seen this before.... Look closely at the bulbs and refer to the owners manual to make certain you install the correct ones. generally in the rear with the dual element bulbs.