Light Group 1974: Underhood, glovebox, map, ashtray, instrument panel courtesy lights, trunk or cargo area courtesy light. Warning lamps for parking brake, door ajar & headlamps on 1975: Underhood, glovebox, ashtray, dashboard courtesy lights, map light. Door ajar and headlamps on warning lamps. 1976: same as 74, but no parking brake lamp 1977 & 1978: Underhood, glovebox, ashtray, trunk or cargo area, under dash courtesy lights. Door ajar and headlamps on warning lamps.