If you can figure this puzzle out, then you qualify to be an IT Rules maker. If not, sit quietly and listen

You have a detached garage with no windows...

You are in the house
There are three switches, labled on and off.
In the shop there are 3 lamp bulbs plugged into 3 outlets
Each switch maps to only one lamp bulb
You can only go into the shop once
Once you leave the house, you can not return!

Question: How can you determine which switches map to which lamps in the shop?

ENJOY!