| CPC B60Q 1/247 (2022.05) [F21S 41/141 (2018.01); F21S 41/192 (2018.01); F21V 21/16 (2013.01); F21Y 2105/10 (2016.08); F21Y 2115/10 (2016.08)] | 20 Claims |

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1. An apparatus:
a housing;
a plug at a first end of the housing configured to be attached to a trailer wiring socket of a vehicle;
a socket at a second end of the housing configured to be attached to a trailer wiring plug;
a lamp at the second end of the housing; and
an electrical lead coupled to the lamp at the second end of the housing to power the lamp and coupled to the socket at the first end of the housing to receive power from the socket.
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