i was checkn the tread on my tires because i was bored and discovered this in my right front wheel well...

the first pic is a wire just hanging and the second is where it connects to since i found the rest of it connected to it.. can someone tell me what this is .. should i fix it.. will i die if i dont.. and how much does it cost

also.. the whole entire back of my block is covered in engine oil crud.. the tranny was replaced a year ago . did someone not put the main seal on right

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