Does not get hot and rechargeable. Lights up well. I got fooled. Car had the factory connector . But only had relay for right turn signal. The reviews said if you k3 relay and cable harness it would work. It appeared to work . My trailer cable was short so bought a 12 inch cable extension. The extension had test lights to check signals it work as long as not connected to trailer . The k1 relay was left turn signal wire is not there in fuse box. I had suspected that was the case and order the right harness for non factory setup. When I tested the factory harness it appeared to be working. So I had hitch installed. Removed that harness today have to take it back. Take it to uhaul and have the other harness installed Monday or Tuesday.