1990 Acura Integra Turn Switch

Electrical problem
1990 Acura Integra 4 cyl Automatic 200, 00 miles

When I turn my lights on and turn my left blinker on my dash lights will go out and so will my brake lights. When I finish making the turn and the blinker switches off the lights will both continue to stay out untill I turn my lights off and than back on. Some times it will take more than one try to get all the lights on when I turn them on and off. Rarely will the lights continue to work after I im finished making a left turn. I want to know if its the Turn Switch its self that needs to be replaced before I spend 140.00 on a new one.