The Renault R17 front and rear turn signal bulbs both utilize a 1157 bulb size for proper illumination. The replacement chart covers vehicle production spanning 1972 to 1979.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Renault R17 uses the 1157 bulb for both its front and rear turn signals across the full 1972-1979 production run.
The 1157 is a dual-filament bulb, meaning it carries two separate filaments within a single glass envelope, allowing it to serve two distinct lighting functions at different wattages.
It operates on a 12-volt electrical system and draws 21 watts on its high-intensity filament and 5 watts on its low-intensity filament.
The 1157 uses a BAY15d bayonet base, which features two offset pins positioned at different heights on the base to prevent incorrect insertion into the socket.
The 1157 is classified as an ANSI standard bulb, a designation that applies to the United States and Canada, indicating it conforms to a defined set of electrical and physical standards shared across many North American vehicle applications.
Because the front and rear turn signal positions on the Renault R17 share the same bulb specification, a single bulb type services both locations on the vehicle.
The BAY15d base is not interchangeable with the single-pin BAY15s base; substituting a single-filament bulb with a BAY15s base into a BAY15d socket would result in incorrect fitment and potential loss of one lighting function.