Also in this section:
Grote's UltraBlueSeal Wiring System
Wiring Charts
SAE Lighting Identification Codes

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