3157 or 3157CK????
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Joined: Jun 2014
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From: Kansas City MO
3157 or 3157CK???? Are the tail light sockets on my 2000 camaro SS CK sockets? I put my meter on it and it had 3 ground points so I am a little confused???? Are there any CK sockets on the car?
Joined: Nov 2003
Posts: 11,329
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From: Jacksonville, FL (originally from Toronto Canada)
That's correct... all 3157 sockets (front and back) are standard not CK.
It is not necessary to test a socket to determine the type. As you've seen, sometimes a contact will register as ground when not actively in use. You can see the difference just by looking into the socket at the contacts. 3157 sockets have four contacts - one for the bright filament power (turn signal, brake, DRL, etc.), one for the dim filament power (parking/running lights), and two for ground. The ground contacts are connected together so that they share a single wire.
When looking into the socket, a standard socket will have the connected contacts at one end on opposite sides of the slot while a CK socket will have the connected contacts adjacent to each other along one side of the slot.
It is not necessary to test a socket to determine the type. As you've seen, sometimes a contact will register as ground when not actively in use. You can see the difference just by looking into the socket at the contacts. 3157 sockets have four contacts - one for the bright filament power (turn signal, brake, DRL, etc.), one for the dim filament power (parking/running lights), and two for ground. The ground contacts are connected together so that they share a single wire.
When looking into the socket, a standard socket will have the connected contacts at one end on opposite sides of the slot while a CK socket will have the connected contacts adjacent to each other along one side of the slot.
