requesting real life experience with 904 lock-up with manual switch

STR, I drove a turbo 2.2 Dodge Spirit that for several years that I installed a turbo lockup A-470 FWD automatic in. I used a manual switch on it. Worked great but I needed to be sure to unlock it when slowing down. I was not excited about cutting into the OEM brake switch circuit wiring as I was too lazy at the time so i just controlled it manually. Dana's idea is safer. :):)