A rear combination lamp comprises a lamp body (2) including socket mounting portions (3) and a lens portion (6), and sockets (20). Lamps are respectively attached to the sockets. Each of the socket mounting portions has a hollow construction of a generally truncated pyramid-shaped. Conductors (4, 11) are mounted on rear end portions of the socket mounting portions to form a predetermined circuit. Connection terminals (23) each having a conductor contact portion (24) are arranged within the sockets. The respective conductor contact portions project from flanges (22) or socket bodies (21) of the sockets so as to contact the respective conductors. When the respective sockets are mounted in the respective socket mounting portions, the respective conductors can be electrically connected to the respective lamps through the conductor contact portions of the connection terminals. The socket mounting portions may include ribs (10), fixing ribs (7) and fixing holes (9) for installing the conductors (4).