Drilled through exterior wall into underneath kitchen sink. Cut line and added new branch with isolation valve. Installed new hose bib on back of house. Customer also having issues with dishwasher not draining. Difficult access to cut out p trap and snake line for the dishwasher drain. Disposal drain was having no issues draining, so I recommended we replace the old disposal and reroute the dishwasher drain to the disposal instead. Did this and capped off old drain line. Ran multiple cycles through dishwasher to ensure it was draining properly. No further issue at this time.