Early A Horn Blows on Left Turns

Pulled apart what I could under the steering wheel. Difficult to see in the photos, but I found some greenish/blue corrosion on the circular piece that the little horn "wheel" contact rides on (photos #1, #2, #3). I cleaned that off with a small brush attachment for my Dremel tool (photo #4). Put everything back together. Don't know yet if the random horn blowing is still a problem or not (have not taken it out for a test drive yet).

The right front turn signal is still not flashing. Going to check the bulb and ground. The parking lamp on the same corner is working, but the light it put out is pretty dim.

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