6-13 volt neg earth p36d (BPF) They are there .- The LED Lighting for the Headlight .- Usable between 5 and 13 volts .- This LED gives enough light to drive in the in the dark.- The power consumption depends on the power supply->, 6 volts 1 Amp.-  And is applicable to most British Pre Focus (BPF) fitting of motorcycles and cars from 1938 to the 1970 s.-> Dim light and big light-> Price on request.