SAE Lighting Identification Codes

A Reflex reflectors A2 Wide angle reflex reflectors C Motorcycle auxiliary front lamps D Motorcycle turn signal lamps E Side turn signal lamps-vehicles 12 m or more in length E2 Side turn signal lamps - vehicles less than 12 m in length F Front fog lamps F2 Fog tail lamps G Truck cargo lamp H Sealed beam headlamp HG Discharge forward lighting (headlamp) HH Sealed beam headlamp housing HR Replaceable bulb headlamp I Turn signal lamps I3 Turn signal lamps spaced from 75 mm to less than 100 mm from headlamp I4 Turn signal lamps spaced from 60 mm   to less than 75 mm from headlamp I5 Turn signal lamps spaced less than 60 mm from headlamp I6 Rear mounted turn signal lamps and front mounted turn signal lamps mounted 100 mm or more from the headlamp, for use on vehicles 2032 mm or more in overall width I7 Front mounted turn signal lamps mounted less than 100 mm from the headlamp, for use on vehicles 2032 mm or more in overall width J845 Warning devices for emergency, maintenance and service vehicles J945 Hazard Warning signal flasher - canceled July 1999 J590 Turn signal flasher J1054 Warning lamp alternating flasher K Front cornering lamps K2 Rear cornering lamps L License plate lamps M Motorcyle headlamps-motorcycle type N Motorcycle headlamps-motor driven cycle type O Spot Lamps P Parking lamps P2 Clearance, sidemarker, and identification lamps P3 Clearance, sidemarker, and identification lamps for use on vehicles 2032 mm or more in overall width PC Combination clearance and sidemarker lamps PC2 Combination clearance and sidemarker lamps for use on vehicles 2032 mm or more in overall width Q Turn signal operating units-Class A QB Turn signal operating units-Class B QC Vehicular hazard warning signal operating unit R Backup lamps S Stop lamps S2 Stop lamp for use on vehicles 2032 mm or more in overall width T Tail lamps (rear position lamps) T2 Tail lamps for use on vehicles 2032 mm or more in overall width U Supplemental high-mounted stop and turn signal lamps U2 High-mounted stop lamps for trucks 2032 mm or more in overall width U3 Center high-mounted stop lamp for passenger cars, light trucks, and MPVs W Warning lamps for emergency, maintenance, and service vehicles W2 Warning lamps for school buses W3 360 degree emergency warning lamps W4 Emergency warning device W5-1 360 degree gaseous discharge lamp-Class 1 W5-2 360 degree gaseous discharge lamp-Class 2 W5-3 360 degree gaseous discharge lamp-Class 3 Y Driving lamps Y2 Daytime running lamps