Early A Horn Blows on Left Turns

Not every time I turn the wheel to the left, but every once in awhile the horn blows on left turns. The right front turn signal is also acting up (thought I fixed the problem by cleaning terminals but I was mistaken). Plan on pulling the steering wheel to see what is going on there. Steering wheel is aftermarket and horn wire is not connected because the wheel center piece is missing (see photo). The horn does blow normally when I ground the horn wire to the steering column shaft.

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