by Ed Esslinger in the October 1999 RootesReview
While traveling home from SUNI I noticed that my ignition key was getting hot to the touch, enough to burn my fingers. After I got home I measured the voltage drop across the switch (brown wire to the white wire on the fuse holder with the ignition switch on) and found it to be one volt. I removed the ignition switch, saturated it with WD40, worked it some with the key, let it dry and then re-installed it.
Checking the voltage drop again I found it was almost zero. I’ve driven the car many miles since and the switch no longer gets hot or even warm.