Is this my electrical short ?

I've had some really awesome people (nm9stheham, Tantibus-74, iw378, Thank you. ) trying to help me with an electrical short, but because I suck at communicating, I got off subject quick. So I'm starting over, with just the facts.
Is the photo below a good suspect for an electrical short. The socket is rusted, and missing a tang.
When I turn on my left side blinkers, I get a power surge, and blow the fuse. The light had the issue before I bought, and modified the car. The steering column, and everything inside is new. the relay, and obviously the fuses have been changed.
I'm hoping this is the problem, because I really screwed up the previous thread on the subject, and unduely confused everybody.