Electrical: Wiring for Stop/Tail/Rear Signal sockets--'63 Avanti

[Stan.Gundry]

Because the original Stop/Tail/Signal rear sockets are so old and corroded, I am replacing them. The pigtail wires on the new sockets are both black, and the 2-button base can go in the socket 2 different ways, in other words, depending on this and how it is wired, either of the two elements in the bulb could be the tail light element and the other the brake/signal element (in spite of the fact that the fact that the bulb can fit into the socket one way because of the staggered pins on the side. So here is the question: Which element is intended for the tail light function and which element for the brake/signal function, the upper or the lower element?

[sweetolbob]

Because the original Stop/Tail/Signal rear sockets are so old and corroded, I am replacing them. The pigtail wires on the new sockets are both black, and the 2-button base can go in the socket 2 different ways, in other words, depending on this and how it is wired, either of the two elements in the bulb could be the tail light element and the other the brake/signal element (in spite of the fact that the fact that the bulb can fit into the socket one way because of the staggered pins on the side. So here is the question: Which element is intended for the tail light function and which element for the brake/signal function, the upper or the lower element?

Brake light will be the brightest of the two filaments, just separately hook each lead up to a 12v battery and compare. IIRC the brake is the one closest to the base but CRS may be involved. The test will tell.

Bob

[rockne10]

What Bob said. Brightest element is brake/turn signal.
When I installed mine I simply twisted the pigtail to the harness and checked the brightness, switched if necessary and spliced with heat shrink connectors.