I have to say, if you own an old car like that you need to get the shop manual for it. I never thought a thing of these manuals thinking they were for people who didn't know anything. I have found after getting one to work on my Rambler that they are VERY useful and have the one for my Buick in the garage and refer to it all the time now. I highly recommend you get one and that e-brake cable will be all spelled out in it.
Here's one on ebay. 1942-1946-1947 1948 Ford Shop Manual Car and Pickup Truck Repair Service | eBay