Electrical problem
1985 Cadillac Brougham V8 Two Wheel Drive Automatic 112000 miles

both signals and emergency flashers stopped working at same time. new switches were put in a week before. they operated fine for about a week. then the drivers side front lower ball joint gave way and broke. which made suspension in front left drop down. mechanic shop locally replaced ball joint. by the time I got car home 20 miles,those lights quit working. I'm wondering what might have happened and how to fix it. thanks much. Barry