I don't think Tina understood your question.
YES you can use a splitter.
Keep in mind that the splitter is also drawing extra watts at the wall.So if 1 light draws 100watts, then 2 lights mesns 200watts. Watts is Amperes X Volts.
So you would be drawing about 2 amperes from the plug (via the spliiter).
I'm certain the splitter has a rating on it like 5A or 10A, and your at 1.5A....so no worries.providing you're in North America.