Yes, there's a threaded brass insert in the base of the handle. You have to cut the cable to the light and fit bullet terminals to the light side and cable side. The remote handle has a pass through cable, so you connect the cable from the light to the top side cable of the remote handle and then the incoming power cable connects to the other cable out of the bottom of the remote handle. The bullet terminals are part of the kit. There is an on/off switch on the handle too. If you don't want to use the support-a-light, you can take it all off and re-connect the light direct to the power cable.
There are two remote handle kits, a short one and a long one. Make sure you get the long one, called the RC225. The RC150 is too short for the Support-a-light.