Peterson 155 Sealed & 156 Hard Hat II Clearance & Side Marker Light

* Functions as clearance and side marker light and may be used as combination side marker and clearance light when properly mounted at a 45 degree angle. * Features internal brass contacts for extended service and two 15,000-hour long life bulbs. * 155 series features high impact lens welded to housing to form a single unit; 160-49 r 160-491 plug required for installation. * 156 series has same features except bulb is replaceable, it utilizes a single lead wire, and grounds though mounting screw. * 155A/R poly pack contains a 160-49 style plug.