Considering the width of the fork, I guess I'll just install the generator on the right seat stay, and the rear light on the left.

I'll get the acclaimed "Axa Dynamo HR Traction", which has 2x2 connectors, which I assume means running two two-core wires, one to each light.

Out of curiosity: Some generators, such as the "Union Dynamo UN-4105", only have two connectors. In this case, how is the second light connected? By running another pair of wires from the other light (generator → first light → second light)?