Some changed my battery turmnals now my blinks
,horn or heat dont work
I got some work done on my van like battery turmnal wete changed now blinkers dont work plus the knock sencer was changed,gaskets,oil,tune up,sway bar and now blinkers dont work
When electrical work is done on a car, often you end up with a blown fuse or two. Check those, or better yet, have the idiot who returned the car to you in this condition fix his work.