I read the TSB (My neice works for the alldata call center) It's says that you are jumpering over the limit switch. So it's nothing to do with the motor power lines. The test jumper with the fuze inline will work fine. For this, a cheaper one without the fuse will also work also.

Quote:
. Jumper Pin # 1 and Pin # 8 on the sunroof express module. If more access is needed, push the module towards the motor and unlock it from the bracket. Refer to the Illustration above.

Note: Avoid operating the sunroof glass to the full open position. Since the limit switch has a jumper across it, there will be no indication to the sunroof module to stop the glass at the full open soft stop. The glass can slide past the full open position, possibly damaging the sunroof assembly and/or the roof.

3. With the ignition ON, push the sunroof switch to the close position to fully seat the sunroof. If this action fully closes the sunroof, replace the sunroof motor only. Refer to the Sunroof Motor Replacement below. If this action does not fully close the sunroof, go to Diagnostic Starting Point-Roof in the service manual.

4. Remove the jumper and re-lock the sunroof express module back into its bracket.