single filement low profile(1003), single fillement (1141), dual filement(1157),
used the 1003 inside my trailer for the 12 v lights
(replacing the old 1141)...
used 1157 dual filement for the back trailer lights
(top) and 1003 single filement smaller bulb for the lower one....just thought people might like a photo to see what the heck this all means when they go to replace bulbs.