I don't think there is one.
TCC lockup is managed by the TCM which is inside the gearbox. You'd have to break into that to change its programming, as far as I can tell. There may not be a way to influence this from outside the box.
I wrote to Wholesale Automatics in Vic who make TCC manual locks for other cars and they didn't respond. Not sure if it's because they can't be bothered, don't know what I'm talking about or don't want to answer the question. All 3 are a cause for concern.