Connector and routing unit

A connector comprising:

• a housing having a cylindrical portion, the cylindrical portion having a portion on a first end side in an axial direction of the cylindrical portion, the portion on the first end side being a fitting portion to be fitted to a mating connector;
• and
• a plurality of terminal portions arranged in a first cross direction crossing in the axial direction of the cylindrical portion inside the cylindrical portion, each of the terminal portions comprising a leading end portion positioned on the first end side of the cylindrical portion and to be connected to the mating connector, and a base end portion positioned on a second end side of the cylindrical portion in the axial direction and to be connected to a corresponding one of electric wires, wherein
• the housing comprises an insulating wall, the insulating wall extending in the axial direction of the cylindrical portion between the terminal portions adjacent to each other in the first cross direction, the first cross direction being a thickness direction of the insulating wall, and
• the insulating wall has an end positioned on the second end side of the cylindrical portion, the end comprising a first end region positioned on one side in a second cross direction and a second end region positioned adjacent to the first end region on another side in the second cross direction and positioned nearer to the first end of the cylindrical portion than the first end region, the second cross direction being a direction crossing the axial direction and the first cross direction.