It goes straight down from the plug and then forward along the top edge of the oil pan. There are wire ties attached to something down there. I'll try to take a picture at lunchtime and post it this afternoon or tonight. You're not the only one who has asked this question.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References