Wis. Stat. § 218.0143: Notice of insurance to buyer under installment sales contract.

Whenever a person sells or agrees to sell any motor vehicle at retail under a retail installment contract that provides for insurance coverage, or a charge is made for insurance coverage, the seller shall do one of the following:

(1m) Ensure that the policy so issued or provided for includes public liability coverage protecting the driver of the motor vehicle against damages resulting from the negligent use of the vehicle.

(2) Notify, in writing, the buyer at the time of making the retail installment contract that the motor vehicle is not covered by public liability insurance protecting the driver against damages resulting from the negligent use of the vehicle and obtain, on a form separate from the retail installment contract, the signed acknowledgment of the buyer that he or she has been notified that the contract does not include public liability insurance protecting the driver against damages resulting from the negligent use of the vehicle.