[TR] GT6 ignition light

[Randall]

IIRC, a 68 GT6 would have a generator.  If so, my first thought would be
dirty voltage regulator contacts inside the control box.  Check by starting
the engine, and measuring the voltage between the D and F terminals on the
control box.  If it is not 0.0, and the light is on, then the VR contacts
aren't contacting.

There is a more detailed troubleshooting procedure at
http://tinyurl.com/3mz5rt7

-- Randall