I have a replacement two connection socket in my tail light. One wire is red and one is black. Which is the tail light and which is the stop light?
Which should be your brighter light, tail light or stop light?
On the headlights how do you tell if the bulb is in correctly for bright and dim? Trial and error?
Usually the red wire is brake and turn, and that should be the brightest one also.
Thanks. I thought the brightest should be the brake light since it has to be seen in daylight.
For the standard '24-27 taillights, I discovered Ford made two different styles of these, the regular style, and another that has a socket like a headlight. With the later style, when you use an aftermarket plug, with spring loaded contacts, it's possible to use a double filament bulb. A standard double filament bulb is too tall, but you can buy one of Snyders Model A conversion cowl light bulbs, and grind down the offset pin, and it fits right in. I have this setup in my '25, and it's great.