Hold the bulb securely and carry power to your stop, marker or tail lamp with the Standard Ignition S-77 lamp socket. It is cataloged as a center high mount stop light socket, side marker light socket and tail light socket. The S-77 fits many vehicles, including the 1982-1996 Buick LeSabre, 1982-1996 Chevrolet Caprice and 1992-1997 Cadillac Seville. See the "Vehicles it fits" section for the full list.
- Three lamp uses: cataloged as a center high mount stop light socket, a side marker light socket and a tail light socket.
- Catalog position: front and rear left.
- Quantity per application: the listed applications call for 1 or 2, depending on the vehicle entry.
- Broad coverage: the listed applications include Buick, Cadillac, Chevrolet, GMC, Oldsmobile and Pontiac models, for all engines.
A lamp socket holds the bulb in the lamp housing and carries power from the vehicle's wiring to the bulb. Heat, moisture and vibration can wear a socket over time. Signs it may need replacing include a lamp that flickers, a lamp that stays dark even with a good bulb, a bulb that sits loosely, and corrosion or heat damage at the contacts. Check the bulb, fuse and wiring first. If the socket is the cause, installing the S-77 replaces the worn part.
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Frequently Asked Questions
What lamps is the Standard Ignition S-77 socket used for?
It is cataloged as a center high mount stop light socket, a side marker light socket and a tail light socket. The catalog position is front and rear left.
Which vehicles does the S-77 fit?
It fits many vehicles, including the 1982-1996 Buick LeSabre, 1982-1996 Chevrolet Caprice and 1992-1997 Cadillac Seville. See the "Vehicles it fits" section for the full list.
How many sockets does my vehicle need?
The listed applications call for 1 or 2, depending on the vehicle entry. Check the quantity shown for your vehicle in the "Vehicles it fits" section.
How can I tell if a lamp socket is bad?
Possible signs include a lamp that flickers, a lamp that stays dark with a known-good bulb, or corroded or heat-damaged contacts. Check the bulb, fuse and wiring before you replace the socket.
Is S-77 the same part as S77?
Yes. S-77 and S77 are two ways of writing the same Standard Ignition part number.
