How to Wire Low Voltage Landscape Lighting with Wiring Diagram


Hey guys, it’s Cal from lighting doctor here so many you guys have been asking about how to wire your low voltage landscape lighting and specifically how to Show me a wiring diagram so we can show you how to do that. So that’s exactly what we’ve done here Forgive me my drawing is not the best. I’m not a professional artist But I do know how to wire low voltage landscape play so I’m gonna walk you through this diagram Hopefully it gives you a clearer understanding after this video I’ll show you physically how we go and do that as well But I think the wiring ground will really help a lot of you guys out who are really really visual people So as always if you have any questions email me Cal at lighting doctor Wanted them give you a little more context when you’re wiring the lights because I always get this question is how to wire the lights and At the end of this I’ll show you the video Where I kind of walk you through it, but some people just need a diagram. So that’s why we did this video So I’m gonna show you how to wire your lights and what it should look like. So first off When I talk about the 12-2 cable, it comes together like this and you split it at the fixtures So if you look at my diagram here when you have these two wires coming It’s actually just the one wire but it’s already kind of split in two so How you go about wiring your lights now? So say you’ve got your lights that come from your transformer as you split that 12-2 there’s two taps or two ports in your transformer that each one of those ends goes into of that 12-2 cable and then You run it out to your existing fixtures now what’s going to happen is one of those wires from the 12-2 is going to go into your BBS to snap lock connectors and Then there’s another port where another one is going to come out and go to Connect. Oh, sorry, that’s going to go out to the next fixture wherever that might be And then you have a smaller port in there that is going to have your wire from your fixture going into it so in essence you’re gonna have three wires going into each one of these and it each light you’re gonna have two of those because You’ve got one wire going in you’ve got one wire going Out and then you have your fixture wire coming in and then you have your other wire that’s going to come into your other connector and it’s going to go out to your next fixture and then you’re also going to have your Wire from your fixed you’re going into your connector so at every single light you’re gonna have two of these connections whether that be the last light or The first light and I’ll show you a close-up of this in a second But I just wanted to give you the general idea of that first another question I get asked all the time is how do I What if I need to split into my twelve to cable and run some wire out to another light that’s off in the distance? Well, you can do that. The only thing is you’re probably going to use a different connection We often use a DB ry connection The reason being is that the BBS two connectors Which I’ll show you a little closer up have two larger ports in one small port so you’re not going to get three Twelve gauge wires in that so that’s why we use these guys. Plus these are very very solid waterproof connections so how that looks now is you still have your twelve two cable that’s going out and One of those wires is going to go into your connector and then I have one of the why you’re gonna have a wire that’s going to go out to wherever your next fixture is and then You’re also going to tee in and you’re gonna have that wire going to wherever you need it to and then same thing that other Wire on that twelve two strand is going to come in. It’s gonna go out and it’s gonna go out to your other fixture So that’s how you tee into a line and I get us all the time. And yes, absolutely You can do that. The other question I get asked all the time is what about the last fixture? How do I go and wire that with these connections? Well, you still have the same three ports which again I’ll show you a close-up in a sec here But just to give you an idea so wherever your last fixture is you’re gonna have that twelve two wire is still gonna keep coming out and Then of those two wires in that twelve to one is going to go into the BBS two connector and then the fixture wire is still going to go into the Smaller port on that BBS two connector and you’re going to do that with the other Twelve portion of the twelve two wire is going to go into your connector and then your fixture from your light is going to go in so in essence the last fixture on the run is only going to have two wires going into it as opposed to These ones that actually have three wires like we talked about right in out and fixture in out and fixture So you have three connections here or three wires going into these connections ORS on your last fixture You only have two and what that looks up looks like a little closer up is like this So if you can see here, we got three ports on our BBS two connectors again I like these because they’re gel filled these yellow things They they open up so that you can slide the wire in and then they snap down on the wire to keep it To keep it nice and tight, but if you see here, we’ve got our twelve two cable coming in we’re gonna split that and One of those twelve 2’s is going to go into there and then it’s going to also come out and go to our next fixture And then we’ve got our wire from our fixture going into the smaller port and then with the other Part of the cable from the twelve to it’s going to go into the other connector It’s gonna go out to the other fixtures and then you’re gonna have the fixture wires gonna go into that smaller port So just a close-up of how that wiring connection should look and then on your last fixture it’s going to look like this you’re gonna have so this is going to keep going and you’re gonna have your Twelve two cables still come into this last fixture but here now instead of the three connections We only need or sorry the three wires going in. We’re only going to have two because it’s our last light on that run So the 12 – cable goes into the connection and then in the smaller port we got our fixture wire Right and then same thing that that wire gets split it goes into The pork on the vbs2 connector and then you have your fixture wire and that’s the end So on any fixtures that are in line You’re gonna have three connections because you got to go in out and your fixture wire and on the last fixture of the line it’s gonna go in and Basically just have your fixture wire and you’re gonna have two of those at every light no matter if it’s your last Fixture or if it’s a fixture that’s in line And then lastly I’ll just show you a close-up of what it looks like when you tee into a line So say you’ve got a light here. You’ve got a light here You’ve left some extra slack because you’ve watched all our videos and I say I always leave extra slack here so that you can tee In or add on down the road if you have to well This is how this is gonna look so you’ve got your fixture and you’ve got your 12 – cable coming and you need to tee It in so you’ve got two coming into your D Bri connector and you’ve got it going out and then you’ve got another wire That’s going to go to wherever That T is that you want that wire to run and then the other half of that 12 to wire same thing It’s going to go into that connection It’s going to come out to your next fixture and then you’re gonna have that extra wire that you just put in to T And again, the reason we use these it’s just it’s a large. It’s a larger hole and it allows us to get three of those Twelve two cables in there. So stay tuned after this. I’ll show you how you actually wire this Physically, not just the wiring ground, but so many you guys have asked for the wiring diagram So I wanted to show you it I hope it helps if you’ve got any questions as always Shoot me an email and I’m more than happy to help Twelve to voltage cable running back to our transformer. We’re gonna hook up this light, but we’ve got more lights down the road So this is how we’re going to use this. So again, you still got your two wires at every single fixture So you’re still going to need two connectors? What we’re gonna do now is we’re going to cut into this twelve two wire and Then we’re going to strip the ends To our wire that’s going out to the next light. So we’re gonna strip that And our 12 to that we just cut that’s coming in from the transformer we’re gonna strip that as well And that’s going to make up our connections for this light So we still are using the same snap block connectors except now instead of the two wires We just talked about at the end of the line. We’re gonna keep this line going So we’re gonna have three wires going into each one. So we’ve got our wire come from the transformer we’ve got our wire that’s going out and then we’ve got our wire to our fixture So how we’re gonna do that as same as we did before? We’re gonna take one of our 12 two wires that’s going out and that’s going to go into one of the ports Then we’ve got our 12 two wire coming in that’s gonna go into one of the ports and then we’re gonna take one of the wires from our Lighting fixture and we’re gonna throw that into the small port We’re gonna snap that tight we’re gonna wrap that up with some tape and then we’ve got another connection So the same thing we’re gonna repeat we’ve got our wire that goes Out to the next fixture is going to go in one of the large ports. We’ve got our wire that’s coming from our transformer That’s gonna go into one of the large ports because we’ve got to keep that line going So that’s how we keep that line going and then we take our last fixture wire And we throw that in the small port snap. Those tight tape those shut and we’ve got two connections at each light well We’ve got the wire coming in hooked up to the light and then we’ve got it connected so that the line keeps going and we’re gonna continue to do that until We get to the end again and then we’re gonna finish that line I get asked all the time firing and I’ll show you I a lot of the videos I talk about these are BBS – snap lock connectors because they’re Super easy to use there’s a couple different ports on them, but I’ll explain two scenarios here. So one here we are I’ve got my wire going up the transformer and then this is the last what the last light on our line So I’m not going to have to keep this wire going anywhere So I’m only gonna have two wires that have to go into this connection So I’m going to have the two wires that come from the fixture and then I’ve got my two wires Coming in from my 12 – cable so you can still use these connections All you have to do is there’s just less port. So there’s three on here. You’re actually only going to use two For each wire. So I’ve got my 12 – and then I’ve got my fixture wire I’m gonna tighten that up throw that in there and Clamp it down nice and tight now that should hold pretty good But I always wrap the base in a little bit of electrical tape – just for an added measure It’s not to keep out the water or anything I just I really want to make sure the wires don’t pull apart cuz I hate having to come and repair connections So I do that just as an added safety measure and then because obviously you have two wires on the fixture You’re gonna have two connections at every single light So this is an example of how you’re gonna wire it if here’s a last light

7 thoughts on “How to Wire Low Voltage Landscape Lighting with Wiring Diagram

  1. Great videos! Very helpful. Question – I ran a 250 ft wire from my transformer to 6 LED Volt branded in-ground well lights in a daisy chain like manner. I find the light strength drops off as I go down the line with my last fixture only lighting half the LEDs in the bulb. Why do you think I'm experiencing this voltage drop? I'm using high quality Volt branded well lights, Volt branded transformer, and 12/2 low voltage wire.

  2. So between 5:00&5:20 I don’t understand the concept of wire in wire out. Is the idea to cut, place into little box, cut and have new wire coming out
    I have only had experience with the. Lighting packages for the big box store with sharp prongs they did ok but ready to step up to something substantial for my soon to be new home. Do you also trench to get wires buried? 4”-6”-8”?

  3. 8:43 answers the previous question. What brand would you select at mid-upper quality ? Site-one landscape sell good stuff?

  4. I REALLY appreciate your video greatly! I've NEVER done any sort of electrical wiring so I maaaay have to watch your video a few more times to get the great information you so kindly provided here but I'm confident that I can do it because of your fantastic instructions so, thanks again!

  5. Thanks for all the great tips! My only question, how do I know which wire in the cable needs to be plugged into what, or maybe it doesn’t matter so long as one wire from the cable is in each connector?

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