I just purchased my first home, which was built around the 1950s. I was in the garage one day and went to turn off the garage light. When i touched the metal box housing the light switch, I received a small electrical shock. Kind of a similar feeling to when you lick a 9v battery. Not painful, but a cause for concern. This is the lighting setup in the garage: [ATTACH]59389[/ATTACH] I turned that light one/off 40 times since I got that small shock, and couldn't recreate the problem or figure out what caused it. Fast forward three weeks, and I was trying to move my goalie gear into the garage and I bumped that fixture with my bag. A few sparks went flying. I then hit the metal piping a few times with my goalie stick and it happened again: [video=youtube;oFGtVnldKyA]https://www.youtube.com/watch?v=oFGtVnldKyA&feature=youtu.be[/video] After this happened, I killed the power at the fuse box and made a closer inspection. I notice that there is some burn marks where the metal conduit meets the box that looks dangerous:[ATTACH]59390[/ATTACH] I opened the box behind the light bulb and noticed a few things: there seems to be way more wiring crammed into that box than is comfortable and that the wire connections to the light are exposed. The red/black live wire connection is extremely exposed, and likely making contact with the metal casing: [ATTACH]59391[/ATTACH] Is this something I can handle myself, or is it a problem for an electrician to solve? I believe that covering the exposed hot wires with some time of insulation/electrical tape would likely solve the problem, but I am very concerned about the lack of grounding there seems to be. I shouldn't receive a shock from touching the light switch. Any advice/insight on this electric problem and how to fix it would be much appreciated. Thanks!!

Before you flame me, yes, I know this was a dingbat move, but a while back, I accidentally accelerated in the garage right into an outlet. The drywall separated from the outlet leaving a gaping hole. In the meantime, we realized some of our basement lights and outlets aren't working. Resetting via the circuit breaker box did not fix it. Looked everywhere for a GFCI outlet that we had somehow missed and we can't find any in the basement (all the ones in the house we know of, we've already reset, to no avail). Could the car crash have damaged the outlet and consequently that entire circuit? The garage is directly above the two rooms in the basement whose outlets and lights no longer function. Another possibility: I discovered a brand-new-in-the-box GFCI outlet in the basement. The basement had been wired by a handyman and I don't believe it was ever inspected by an electrician. Is it possible he forgot to install a GFCI outlet and that could be causing the problem?? If so, would just installing the GFCI fix this problem? Thanks in advance, and yes, I deserve any ridicule you need to throw my way.