Customized equipment installed in an auto but not by the original manufacturer A: may not be excluded from an auto policy coverage unless coverage is waived by the insured with a special endorsement signed by the insured and attached to the auto policy. B: must be covered like any other items of equipment and no additional premium may be charged. C: voids an entire auto insurance policy because it increases the risk that the vehicle will be destroyed or stolen. D: may be excluded from coverage or covered for an additional premium