Hi Leslie,
The following passage may help. Taken from the
Clue Chronicles: The Fatal Illusion Walkthrough by Polar.
"Move to the control panel on the right of the cable car. Flick the 3 switches on the left so that they're pointing upwards and the big lever on the right, and you will find yourself in the cable car. To start it, turn the lever on the left until the red light disappears. Then move the lever on the right upwards. The cable car will now move upwards. Oh no, ice has formed on the cables and you can't move forward. To break the ice, you have to go down and go forward twice. Now you can reach the mansion."
Hope it helps. We havent played this game yet.
Take care.
Mr. Bill