Fuse box inside car help!

  1. #1
    one of the wires for the electric windows fuse keeps shorting out and blowing the fuse. ive narrowed it down to be at the back of the fuse box as if i wiggle the wires about i can put a fuse in and its fine but 10 minutes later it goes bang again. Could be the connector also. How can i take the fusebox out without removing the heater ducting?