Something I add to every vehicle I own is a 3rd brake light flasher. Having been rear ended previously I think it really help gets the attention of all the texting drivers on the roads today. The one I like that is very reliable is made by Velleman. It's a kit that you have to solder parts on the circuit board. However, there are several other ones available that are plug-n-play (no assembly), but I don't know their quality or longevity. The Velleman unit just works.