Launch control activation

[azerty666x]

hello all !

im using vems 1 plug ECU on my 106 s16 1.6 16v.

Runing fine on Na for now 8) but i want to add launch control.
Problem, i want to activate it with a push button.
Ive read that you have to wire a pin from the ECu to the push button then to the ground but where i have to take the pin ?

i use firmware 1.0.72 on vems V3 (i use this ecu https://www.dp-engineering.nl/vems-pnp-psa-1-6-16v-tu5j4-nfx.html) but i bought it second hand from a guy so i dont know any more infos about launch control (if wired already)


thanks you.