does anyone kow about these, id like to use my rear turn signals ad brake lights, but want them to flash first to get attetion from behind. is this all i need

http://www.denniskirk.com/jsp/product_catalog/Product.jsp;jsessionid=FPYHHF2MYVKGJLA0WTISM4VMDK0 OWIV0?store=Main&skuId=211256&productId=211256

Application chart lists up to 2003 only.

have to buy a adapter which is 14 dollars