Electonic TCS and WI? Any risks

[Will_emt]

I run a 2D system in a 20v Turbo golf. I am halfway through installing a traction control system that cuts fuel, based on a supplementary ECU that taps into the ABS system, monitors slip and cuts the injectors to reduce slip.
What are the risks if any, considering that the 2D system taps into the injector cable? Should the injector pulse reader wire from the WI be before or after the splice for the TCS?
Please advise
Thanks
Will