richenry

I '83 911 has an intermittent starting problem. When I turn the key, the starter will not turn. The battery is fine. I cleaned and tightented all electrical connections to and from the starter but still no joy.
I think there may be a bad connection from the starter to the ignition switch. The Bentley manual shows a solid yellow wire going from the starter to the ignition switch. The problem is, I cannot trace the yellow wire because it dissapears to the rear of the car into the dark abyss of the engine compartment.
Does anyone know the route this wire takes? Does anyone have any further suggestions? Any insights and opinions are greatly appreciated.
RICH