I recently bought a ignition coil harness replacement to upgrade my Coilpacks to 2.0t coils from ECS Tunning. I was wondering what tweaks (like sardering or splicing) does this harness need to in order to make everything work correctly. Also how to figure out the Depinning that goes to the last cable to fit into the ECU. Forms show they bought these types of harness they used, but never explain if it just plug n play or do you have to mod it

Heres the type of harness: Volkswagen Golf IV 1.8T ES#2089861 Coil Pack Wiring Harness Replacement - 1J0971658L