Mich. Comp. Laws § 436.1610a

Sec. 610a. (1) Subject to subsection (2), a manufacturer, mixed spirit drink manufacturer, warehouser, wholesaler, outstate seller of beer, outstate seller of mixed spirit drink, or vendor of spirits may provide to a retailer signs that promote the brands and prices of alcoholic liquor, including special event pricing. (2) All of the following apply to a sign allowed under subsection (1): (a) The sign must not be illuminated. (b) The sign must not have any use beyond the actual advertising of brands, prices, and events related to the alcoholic liquor. (c) The sign must not include the name of the retailer. (d) For a sign that is located inside the retailer's licensed premises, the sign must not be more than 3,500 square inches in dimension. (3) A retailer may use an illuminated sign to promote the brand but not the price of alcoholic liquor. A manufacturer, mixed spirit drink manufacturer, warehouser, wholesaler, outstate seller of beer, outstate seller of wine, outstate seller of mixed spirit drink, or vendor of spirits shall not provide to a retailer a sign described in this subsection. (4) The signs allowed under this section are in addition to the advertising items that a manufacturer, mixed spirit drink manufacturer, warehouser, wholesaler, outstate seller of beer, outstate seller of wine, outstate seller of mixed spirit drink, or vendor of spirits may provide another licensee under section 609(2).