Acrylic adhesives and epoxies will both bond to the epdm; both will likely have trouble bonding to bare metal without some type of prep and primer wash on the metal surface (assuming you are bonding to bare metal; if to the insulation on the wire, you will need to find out how best to prep the polymer surface to achieve a good bond). If you want really high bond strength, look into overmolding the wire with the epdm, using suitable bonding primers on the metal.