There should be two nipples on the large line from the vacuum pump to the brake booster. They should have two different size orifices. Connect the one will the smaller size orifice to the line going to the tranny. Then plug the larger one.

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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