If you don't already have a double contact bayonet socket for your parking light, you will need something like this.
tps://www.zoro.com/grote-lamp-socket-pigtail-68130/i/G1038502/?recommended=true
Your second link doesn’t work because it’s missing the first two letters.
https://www.zoro.com/grote-lamp-socket-pigtail-68130/i/G1038502/?recommended=trueHowever, unless you also change the socket it won’t work. Single filament sockets are different than twin filament. Single filament have two opposite retaining studs on the sides and twin filament have two offset studs so you match the small filament to the running lights and the larger filament to the brake light circuit. You have to buy the entire socket for the conversion.
Here is one that would work and there are others. Check with your favorite vendor.
https://www.classicparts.com/1947-59-Double-Contact-Conversion-Kit/productinfo/47%2D905/
