What did I do and how do I fix it? 1953 Mercury

[engine103]

Thanks to all who replied!! I changed out the Neg. ground battery cable it was original, had OReilly's load test the battery, tested good. checked fuse under dash labeled "turn signal" fuse was not tight in holder. So now everything is back to normal except I still do not have right turn front or back. As you can see the wiring to the socket is not good, so I will go to the junction block, replace the wires from there, and get a new socket. Again, thanks to all. Jim