The cable on my 68 vert runs down the right rocker sill channel. My car is a very original 60k car. it even has the original clip stays that hold it in place. There are 2 differences that may possibly make it different then yours. The first is it is a Sept. built car so very early. the second is that my car has a manual top, so no pump. The first gen site had a lot of these factory diagrams but disappeared a couple of weeks ago. hopefully someone else can chime in with a good memory or a link to a diagram.