One of the essential components of towing our truck behind our motorhome is the air-powered brake controller, which presses on the brake pedal in the truck when the brake is applied in the coach, using its air braking system. The brake controller is secured to the truck via a D-pin, seen on the right of this picture:

When hooking up for a recent travel day, I noticed that the pin was missing; it must have not been secured and dropped out somewhere. I made do with a zip tie for that trip, and ordered a replacement from the manufacturer. While there, I saw that they had improved pins for the tow bar, too, so I also ordered that:

So now I have a spare brake controller pin, in case I lose it again. And the new tow bar pins are much easier to use. Here’s one of the pins that came with the tow bar; it just has a metal ring that has the locking linchpin attached; it can be difficult to pull out the tow bar pin when disconnecting, if the truck is at an angle:

In use:

Compare to the new tow bar pin; it has the same tethered linchpin, but the big red handle makes it much easier to pull out:

In use:

A huge improvement, highly recommended.