Over the weekend the 1978 440 invader had the complete lighting circuit stop functioning. Process of losing the light was somewhat intermittent in that the headlight flickered on and off for about 20 seconds before completely going out. All lights (head, tail, brake, gauges) and tach have stopped. Bulbs are not blown. First check will be the resistance on the lighting coil. After that, does anyone else have experience what to trace through next.
Thanks.