The #6 "lift"fuse keeps blowing.

What is your question?

The passenger side front and the driver side rear fuse keeps blowing. As soon as u start putting fuse in it starts sparking and is ready to blow. I used the power probe and checked to make sure the window motors are not faulty, and they work fine. The resist between the leads is .8 ohm. But that's the same resistance on all main motor wires. So I do not believe it is a motor short. There is no resistance between any of the motor wires and ground. So I do not believe a wire is grounded with a short. Any ideas?