Not to disagree with
anyone here but to add another possibility. If it smells engine-y rather than
electrical I have another possibility. In a former life I had a '65 Riviera
which exhibited the same symptom, along with what I thought was too much sound
from the engine compartment.
It turned out to be
complete disintegration of a foam seal at the bottom of the steering column
tube, through which the column "core" itself passed. It was shaped like a 2-3"
thick donut with the hole off-center. Can anyone with a manual check if there is
such a part on the Imperial? (I'm brand new at this subject.)