Radio and Doors stop working

I woke up to find van with a dead battery. I switched batteries with my '68 squareback as I connected the black cable to negative post the cable to the alternater began to sizzle. I quickly disconnected. I did not tap for the spark. A mechanic came over to check it out. He put the original battery back in and jumped started it. Long story short he ended up replacing the alternater. Since then my radio has stopped working and my rear passenger doors stopped opening automatically. The left rear won't open at all. What do I do to get them going again?