I had a Harley clone regulator fail on the way to Portugal last year, followed by finding out that the spare that I carried had two identical black wires to connect to the earth and +ve feeds; the wrong guess led to semi frying the spare before I realised and swapped them over to the correct way round. Got home from Caramulo on Mario's regulator. I now have two Drag Specialties Harley clone regulators; one fitted and working and one all set with cable protection, correct terminals, fasteners and cable ties ready to fit on when required.