It continues east through Amity Township and it intersects Pennsylvania Route 662 on the border of Amity Township and Oley Township.
Following this intersection, the route heads through more farmland prior to reaching the southern terminus of PA 143.
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PA 662 heads northwest through agricultural areas prior to reaching the intersection with US 222 in the community of Moselem Springs.
PA 12 continues eastward as a local road towards Pennsylvania Route 662 in the Ruscombmanor Township community of Pricetown.
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