How do I properly connect the upper oven's electrical conduit to the lower oven?
The speed microwave oven or steam convection oven power cable must be properly attached to the oven-mounted junction box located on the rear top of the lower oven before supplying electric power. Guide the wires through the conduit access hole, snap the connector into place, match each wire by color to the wiring block, and tighten the retaining screws securely. Replace the junction box cover when finished.
From the official Bosch HBL5751UC Oven manual, page 9
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