could be the switch. the contacts sometimes get corrosion on them. had this happened to a 94 trooper(same parts). i took the steering wheel off, removed the combination switch and took it apart. there is a spring and a small bearing like ball in there. the contacts had black corrosion on them. sanded them clean and put it back together and it worked fine. if you do this, be careful not to loose parts and some lithium greese on the moving parts in there is not a bad idea.