Yep, that be the one. However, in addition, while you are at Harbor Freight, buy all three of the connectors and one of the quick connectors. Put the one you usually use on the air chuck and keep it stored in your spyder, and keep the others as standbys. Reason being is that on the road when you need air and find it, you never know what type connection you are going to run across. If you have all three you should be in good shape. By the way. Harbor has a connector that is supposed to adapt to al three styles, but I haven't confirmed that by trying to actually making it work myself. I'm a spooky about these "one size fits all" things.
Most decent bicycle shops have these for about a buck a piece. Combine that with the longer air chuck like in the link above (or get a really good one at NAPA and a trucker's style long guage) and you are all set.