Hawaii Revised Statutes Division 2. Business § 481R-12

(a) A warrantor or a warrantor's representative, in the warrantor's vehicle protection product warranty or in an advertisement or literature for the warranty, may not:

(b) A warrantor may not require, as a condition of sale or financing, that a retail purchaser of a motor vehicle purchase a vehicle protection product that is not installed on the motor vehicle at the time of sale.