Cal. Code Regs. tit. 10 § 2121.5
No licensed dealer or dealer's subsidiary shall enter into or proceed under any contract, agreement or other arrangement under or pursuant to which any premium for insurance which is included in the unpaid balance of any contract of sale is not remitted to the insurer or person entitled thereto within 90 days after the execution of such contract.
If such premium or the net portion due is not so actually remitted to such persons within said 90 days the licensed dealer or dealer's subsidiary shall be responsible for the refund to the purchaser of the finance, interest, time price differential, service charge or any other fee based upon such premium for any period prior to its actual remission. Such refund shall be made in the same manner as is provided for a refund in Section 2115.
Cal. Code Regs. Tit. 10, § 2121.5