this seems to pop up occasionally, someone needs to wire a later GM column into an earlier GM car, or vise-versa....and GM changed the color codes some time in the early 60s. Old is the 50s and early 60s color code, Function is what the wire does, New is the mid60s- and newer color code. Some of the columns have all black wires with a color stripe, so for these the New color is the color of the stripe on the black wire. Old----------function----------New pink---------left rear----------yellow purple-------right rear-------dark green light blue----left front--------light blue dark blue----rightfront-------dark blue white------brake switch-------white yellow---power from flasher----purple
haha, i wish you'd posted this earlier. i nearly drove myself nuts figuring this out with a multimeter on the '57 column i put into my truck.
On the "new" side there would also be a black for the horn button to ground the horn relay to blow the horn.
yes, the horn switch wire is usually black on newer cars, but I left if off my list since I was talking about turn signal switch wires....I probably should have included it. on older column the horn switch wire is often tan.