Cliff, I am horrible at explaining, in the Dennis Carpenter parts manual there is a 'how to' article. or
I attempted to download the specific page in Dennis Carpenter website catalog but it brings up the entire catalog. Here is how I got to the article: go to Dennis Carpenter website, on the right hand side of the page scrol down to 57-66 truck, econoline and open up the catalog icon, not the shopping basket. It will open a pdf file, enter page 121 at the top and should take you to the article. Meantime, I will look for an article I bookmarked but can't seem to find. While on their web page may want to order a catalog if they are still free.