Those connectors you have are very high quality. The rubber O-Ring seals them from water. Look closely for a manufacturer's name or logo. Contact the manufacturer and get mating connectors to put on whatever lights you buy.
The crimp-on style are very much subject to water entry, which won't cause a direct problem, but will lead to corrosion and poor electrical connection in time. If you can't find the mate to the connector you have get something similar - a four-conductor trailer connector is designed to keep water out, although they're not much better than the crimp-on. True you only need two connectors, but having four won't hurt anything, and you can use them in pairs for twice the connectivity.
The crimp-on style are very much subject to water entry, which won't cause a direct problem, but will lead to corrosion and poor electrical connection in time. If you can't find the mate to the connector you have get something similar - a four-conductor trailer connector is designed to keep water out, although they're not much better than the crimp-on. True you only need two connectors, but having four won't hurt anything, and you can use them in pairs for twice the connectivity.
