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