installed new right front turn signal to my 2001 s40 and all hell broke loose.... the turn clicker works but if you turn the lights on it wont flash because the turn signal now goes through the headlight switch....with either of the light settings on the turn signal indicator on the dash stays green and wont blink.....new headlight switch.???..its a real annoying crazy

 

Did you change the bulb to a led one ? If so that will cause a lot of problems

 

Step #1 - Take the new rf turn signal out and see if the headlamps work normally. Then figure out what's wrong with the new part.