First connect your power to the black dimmable led driver wire then check voltage on your lights. If your voltmeter reads less than voltage mentioned above, disconnect power from black wire, remove orange wire nut from the orange wire, cap with this nut black 12v power supply wire, connect the power to the orange wire.
More information if you would like to know Smarts Electronics’ led electronic driver, you can login http://www.smarts-electronics.com/ Or contact with Mr. Steven(skype: steven821228 mail:steven@smartselectronic.com.cn)