Looking for fuse, or plug, to disconnect the locking torque converter

My 2013 2.7 seems to be almost straining, or lugging most all the time. I'd like to try it, for a while, with the torque converter disconnected. Unlocking the converter will add appx. 300 to 400 rpm. & should help the eng. run free'r. Moving the shifter from OD to 3rd, both shifts to 3rd & unlocks the converter, appx. 700 to 800 rpm., that's more than I want. I've found I can ease the brake pedal till the brake lights come on, & the converter will unlock, but that also disconnects the electric accelerator pedal, so that won't work. Thinking there should be a plug, connector, or fuse, that will let everything run as normal, except the locking torque converter won't lock. Any help would be great.