Cal. Civ. Code § 2982.8

(a) If a buyer is obligated under the terms of the conditional sale contract to maintain insurance on the vehicle and subsequent to the execution of the contract the buyer either fails to maintain or requests the holder to procure the insurance, any amounts advanced by the holder to procure the insurance may be the subject of finance charges from the date of advance as provided in subdivision (e).
(b) These amounts shall be secured as provided in the contract and permitted by Section 2984.2 if the holder notifies the buyer in writing of his or her option to repay those amounts in any one of the following ways:
1. (1) Full payment within 10 days from the date of giving or mailing the notice.
2. (2) Full amortization during the term of the insurance.
3. (3) If offered by the holder, full amortization after the term of the conditional sale contract, to be payable in installments which do not exceed the average payment allocable to a monthly period under the contract.
4. (4) If offered by the holder, a combination of the methods described in paragraphs (2) and (3), so that there is some amortization during the term of the insurance, with the remainder of the amortization being accomplished after the term of the conditional sale contract, to be payable in installments which do not exceed the average payment allocable to a monthly period under the original terms of the contract.
5. (5) If offered by the holder, any other amortization plan.
  If the buyer neither pays in full the amounts advanced nor notifies the holder in writing of his or her choice regarding amortization options before the expiration of 10 days from the date of giving or mailing the notice by the holder, the holder may amortize the amounts advanced on a secured basis pursuant to paragraph (2) or, if offered by the holder as an option to the buyer, paragraph (3) or (4).
(c) The written notification described in subdivision (b) shall also set forth the amounts advanced by the holder and, with respect to each amortization plan the amount of the additional finance charge, the sum of the amounts advanced and the additional finance charge, the number of installments required, the amount of each installment and the date for payment of the installments.
In addition, the notice shall contain a statement in contrasting red print in at least 8-point bold type, which reads as follows:
“WARNING—IT IS YOUR RESPONSIBILITY UNDER CALIFORNIA LAW TO OBTAIN LIABILITY INSURANCE OR BE SUBJECT TO PENALTIES FOR VIOLATING SECTION 16020 OF THE VEHICLE CODE, WHICH MAY INCLUDE LOSS OF LICENSE OR A FINE. THE INSURANCE ACQUIRED BY THE LIENHOLDER DOES NOT PROVIDE LIABILITY COVERAGE AND DOES NOT SATISFY YOUR RESPONSIBILITY UNDER CALIFORNIA LAW.”
(d) If subsequent to the execution of the contract the holder advances amounts for repairs to or preservation of the motor vehicle or preservation of the holder’s security interest therein and such advances are occasioned by the buyer’s default under the contract, such advances may be the subject of finance charges from the date of advance as provided in subdivision (e) and shall be secured as provided in the contract and permitted by Section 2984.2.
(e) The maximum rate of finance charge which may be imposed on amounts advanced by the holder subsequent to the execution of the contract for insurance, repairs to or preservation of the motor vehicle, or preservation of the holder’s security interest therein, shall not exceed the annual percentage rate disclosed pursuant to Section 2982.