I have a 72 super.
The battery won't stay charged. If I charge the battery on a charger, it starts however the lights are very dim. The little red light on the speedodometer stays on.
There are 3 wires under the seat by the battery. One of them is yellow. Its not connected to anything.
I'm not a mechanic. I need help. It might be something simple, maybe not.
there is a little black switch under the dash by the fusebox. What is that for?