Hello my uncle gave me this system and said that it is missing a part for lights such as street light, house lights etc. Im not sure what the second part could be it would need to be wired thats all that I know. it has three -v dc outputs and three +v outputs I do not know how to insert a picture to show.
You don't mention a transformer but without a picture, it is pretty much hopeless. There is a Sticky (permanent post) on how to do it.
Or an easier way,
Viola
Henry
COB Potomac & Northern
Shenandoah Valley
If you can't post a picture, can you at least tell us what light system you bought as there are quite a few of them out there.
Help us help you!
Neal