Yes, and also unhooked the pos battery connection..... I checked the accessory fuse, but, it looked fine.... and as mentioned, the lights on the speedo and license plate work, but, nothing else....
A broken filament will cause your light to not work... However, the circuit should be wired in parallel so that if the headlight blows the other lights in the circuit (i.e. speedo light, turn signals and markers) would still come on...