Good question. Considering the fact you are using another control unit and wiring changes are likely to still this modification should lead to a positive result. However, at the moment I did not compare ETM 540 and 740, and I can not say whether or not the transmission wiring is the same. I'll try to check it out this weekend.
In addition, as one of the validation of this modification is the fact that changes the logic of the transmission with gear selector in different modes. This can be seen on the last picture.
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