But though they strung a number of phases together, they were held out by a strong defence and had to settle for penalty points via first five-eighth Willie Walker's boot.
Hawke's Bay's reply came on the stroke of halftime as they strung 16 phases together before prop Sona Taumalolo burst the defence for another converted try for a 17-3 lead.
North Harbour emerged from their dressing room looking like they still had not remembered any of their lines.
Hawke's Bay, maintaining their composure, proceeded to run home another three workmanlike tries through Tu Umaga-Marshall, Gillies Kaka and Hikairo Forbes.
Horrell kicked a penalty and two conversions in the second half before North Harbour scored in the dying minutes with a try by Mat Luamanu which Ben Botica converted.
The result gave Hawke's Bay their third win of the season and took them to 13 points in the Championship standings.
- NZPA