MG Car Repair: 74 Mg Miget Headlights / Taillights, mg miget, high beams

Question
My headlights and tailights will not come on. Break lights work, They were working earlier tonight, backup lights work , High Beams work, Any ideas?

Answer
Hi Steve,
Don't try to figure out by symptoms what is wrong. Take a 12v test light and ONLY ONE of the failed circuits and trace with the test light from load (a light in your case) and turn that light on and with your wiring diagram and test light start checking from the bulb on to the next joint (following the color code by the wiring diagram) and you have to soon reach where the power is lost. It is a 100correction method and most of the time when several lights are not working you will correct all of the problems by tracing one circuit.
If you don't have a wiring diagram let me know and I will put one on my web site for you to copy.
Howard