DIY Home Improvement Forum banner

How to replace a 3 way light socket with standard

15K views 11 replies 6 participants last post by  spaceboy909  
#1 ·
Hi all.

I just bought some cheap floor lamps at Walmart that were on deep discount, and the main lamp has a 3 way socket. I want to change the socket to a standard because, 3 way LED's are expensive, and I don't like running the 3 way Incan's in the warmer months because of the heat.

I tested a 3 way Incan bulb and it will run fine on the highest setting, but a standard LED will not run at all. At best, it lightly flickers on the highest setting. If it would run fine on high like the Incan, then that would work, as I really only use these big lamps on high anyway.

So, I'm wanting to do one of two things:

1) If perhaps there is an easier way (and cheaper) than replacing the socket, perhaps just rewiring the current one to turn it into a standard lamp? That would be nice and save me money. Can this be done? If so, how do I do it properly without turning the outside of the lamp into a shock post!

I will also ask here if anyone makes a simple screw in adapter that converts a 3 way to a regular without having to do any wiring. That would be great!

2) If #1 won't work, I have already bought a replacement standard socket, but I still need to know how to wire it correctly.

As you can see in the pics, each screw has 2 wires going to it, and these wires go down to another junction where a side lamp is connected.

It's harder to see in the pics, but the silver screw seems to have one ribbed wire, and one wire that has a large white stripe on it, and may also be ribbed. The brass screw has one smooth wire, and the other seems to have multiple super thin white lines on it. I suppose that makes sense to have each wire marked in a 4 wire setup.

Any help is appreciated!
 

Attachments

#2 ·
Not an expert, but I believe that there is no difference in the wiring. Just think about the fact that your wall receptacles only have a hot, a neutral, and a ground. Whether you plug in a standard bulb socket, or what you are calling a 3way bulb socket, both will work plugged into any receptacle.

The difference is inside the 3way socket as far as I know.

Sent from my SM-G530T using Tapatalk
 
#3 ·
Did you try the LED on the other switch settings? A incandescence 3-way lamp has two filaments powered by different contacts (centre and ring on the bulb base) and gets the high setting by turning them both on. Maybe the two closely spaced contacts are messing up the LED bulb. You might be able to achieve the same thing by disconnecting the wire from the low (non-centre) contact.
Regardless, all those black wires are coming from the switch, wherever that is. There's only two incoming wires from the plug; hot and neutral. They may be be black and white or with internal lamp wiring could be any colour.


https://en.wikipedia.org/wiki/3-way_lamp
 
#4 ·
Did you try the LED on the other switch settings? A incandescence 3-way lamp has two filaments powered by different contacts (centre and ring on the bulb base) and gets the high setting by turning them both on. Maybe the two closely spaced contacts are messing up the LED bulb. You might be able to achieve the same thing by disconnecting the wire from the low (non-centre) contact.
Regardless, all those black wires are coming from the switch, wherever that is. There's only two incoming wires from the plug; hot and neutral. They may be be black and white or with internal lamp wiring could be any colour.


https://en.wikipedia.org/wiki/3-way_lamp
Ok, thank for the info and link. I'm starting to get a better understanding of this now. I also just watched a video where a guy replaced a standard socket with a 3 way and it was just a 2 wire setup and just a simple swap out.


With this lamp, it has that side lamp, and that must be the reason for the extra wires, but there are 2 switches, one at each lamp. And there are only 2 screws on the main lamp switch, with 2 wires going to each one.


So, my guess is only 2 of the wires going to the main switch are active at a time, 2 for when the side lamp is off, and 2 for when it's on.


I don't think the main 3 way switch will come apart to allow disconnection of the low wattage contact, but I'll take a closer look.


Now that I know how the 3 way bulbs and contacts work, I'm a little surprised that my LED isn't at least working on the medium setting. Maybe it's a bad bulb. :plain: I guess I should have checked that first.....



Ok, I'm going to tinker. I'll report back what I figure out. Thanks for the help guys!
 
#6 ·
After seeing the pic of the lamp, I think the confusion lies in the fact that it does not appear to be a lamp with 3-way lamp sockets, but a fixture with 2 lamps on a 3-way switch; off>one lamp>the other lamp>both lamps. I am sitting under one like that as we speak.


I'm guessing if you look down into the socket bases, they lack the tab contact #2


Image



If so, they are just two, normal single setting socket bases and will accept any similar lamp.
 
#8 ·
Thanks for the extra info guys. I have retested it with different bulbs, and indeed, my first LED bulb was bad. I did not fully understand how the 3 way switch worked at the time and assumed the bulb was bad, which I had just pulled out of another lamp.


The main/top socket on this lamp is a true 3 way switch, with both tabs inside. The side/reading lamp is independent of the main and can be on or off regardless of the other switch.


Frodo: Regarding some of the other info, based on what I saw in the wiki page and pics, a regular bulb will only be on when the switch is in the 2nd or 3rd position, but not the 1st, as it is the low watt tab only which won't contact the center of a regular bulb, and that is how this lamp tests for me: Off for 2 positions, and on for 2 positions.



I am curious though about the wiring. If it's wired in paralell, which makes normal sense for an independent setup, then why run 4 wires to the top switch when only 2 are needed? The only reason to run 4 wires would be the design that I proposed, which would be the long, and seemingly more expensive way of going about it, running that extra redundant wire up there.


I know that sometimes in manufacturing it's not always design logic that determines the design, but purchasing logic, i.e., the company may have gotten a super discount on some "4 position" switches and it turned out to be cheaper to do it this way even with the extra wires, whereas at normal buying prices, it would not.