Symbol 2954 from ISO 7000 - Title/Meaning: Interior light, trailer Function/description: To identify the control or the indicator for the trailer interior lights in a tractor/trailer vehicle when separate controls are provided for the tractor and trailer interior lights.Note: When there are separate controls, use ISO 7000-2457 for the tractor interior (dome) lights and this symbol for the trailer interior lights. The indicator is intended to alert the driver that the trailer interior light has been left on.
Additional information: 
When there are separate controls, use ISO 7000-2457 for the tractor interior (dome) lights and this symbol for the trailer interior lights. The indicator is intended to alert the driver that the trailer interior light has been left on.
Own work using: iso.org/obp/graphics/grs/69ac36da-d48c-49be-a028-4cf220b4935b 200.png
Vectorization:  Mrmw