I don't believe you did this!
"...I cut the clamp off of the OEM braided line and soldered the end flat and attached it to the disconnect..."
Please go back and redo that. Don't solder anything in a primary electrical system in an automobile (or truck) 'cause, if you get something wrong, it will un-solder itself and as it is doing so, the resistance will go sky high and you will let the smoke out.
