Renault Kangoo total electrical failure all fuses checked and ok including the engine bay fuses no power to dash or ignition at all

Damaged ignition changed for replacement item transponder and reciever from original fitted to new ignition and remote key total electrical failure to dash and ignition ! Battery perfect battery fuses all good including all engine bay fuses and passenger side internal fuses all good but still no power registering on dash or up to ignition any suggestions where to check next please