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Window circuit blowing fuses when the switch is operated.

I’m upgrading my window motors as I finish the restoration of my pre-L car.  With the initial (native) motors in place the fuses blew every time I’d pull the switch.  I figured it was the old motor, old grease, poor alignment, etc.  I have purchased Taurus motors, modified the regulators, run them on 12v source w/good movement, and installed the setup.  Everything runs/moves as it should under direct 12v power w/o binding.  However, yet again, when I connect the new motor to the harness, pulling the switch again blows the fuse (25 amp) immediately.  What am I missing?

Last edited by George P
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