Good step by step Always torque to spec! Especially torque something like a hitch receiver where forces applied by trailer or other mounted device are significant and can cause failures. The larger top bolt of this installation has a very high torque (most often applied with 3’ long torque wrench) and not something an average person can do with a ratchet. Recheck torques on regular basis. The other drivers on the road appreciate you doing it right. You can leave fish wires on until ready to put nut(s) on to prevent accidental displacement of bolt. And as you discovered, fish wires work best by going from hard access to easy - in this case push the spiral end of fish wires up from hole in the bottom of frame tube and out the end - then thread spacer and bolt on it as you noted and pull back into place.
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Good step by step
Always torque to spec! Especially torque something like a hitch receiver where forces applied by trailer or other mounted device are significant and can cause failures. The larger top bolt of this installation has a very high torque (most often applied with 3’ long torque wrench) and not something an average person can do with a ratchet. Recheck torques on regular basis. The other drivers on the road appreciate you doing it right.
You can leave fish wires on until ready to put nut(s) on to prevent accidental displacement of bolt. And as you discovered, fish wires work best by going from hard access to easy - in this case push the spiral end of fish wires up from hole in the bottom of frame tube and out the end - then thread spacer and bolt on it as you noted and pull back into place.