"We were intent on getting our attack shape going and when we did get that going we scored points," Harris said.
"When we were doing things that we'd practised we were good.
"We looked good through set piece, looked good with ball in hand and played some really good rugby."
Another emerging aspect of the Northland game was the strength and ability coming out of the front row.
Howard Sililoto and Dominic Robertson-McCoy fronted up well against Waikato powerhouse Ben Tamiefuna and despite Northland captain Matt Moulds being sent off for a precautionary scan on his wrist after a possible hyper-extension or sprain, depth doesn't appear to be a concern.
Northland will regather in Whangarei this week and a team to play Hawke's Bay for this weekend's Ranfurly Shield encounter will be announced on Thursday.
Waikato 55 (Damian McKenzie 2, Murray Iti, Whetu Douglas, Anton Lienert-Brown, Declan O'Donnell, Joe Webber, Hame Faiva, Luke Masirewa tries; McKenzie 5 cons) Northland 35 (Matt Moulds, Kurt Davies, Filipo Nakosi, Jone Macalai, Hayden McCaw tries; Dan Hawkins 3, Tyler Landsdowne 2 cons) HT: 26-21