wiper switch

In the process of re-wiring the car, the wiper electrics has been a test. The one thing I discovered is the wiper (my wipers) are turned on by ground. The yellow wire, bue/yellow and blue/red and another black wire (thinner guage than the black ground) did nothing until tested and hook it up as you see it. The big tag is ground on your right, and the tag you can barely see is a 12v power source dk blue or black.