Bus Bar ??

Buss bar

More for power to the track. MTH makes a nice terminal strip. + and -  on each side. Could be used for lighting as well. Around 10 or 12 terminals and you could easily double up multiples. Miniatronics makes a similar one.

 The buss bars you mention. Try www.allelectronics.com.  They have a good selection. I know they offer brass ones that will connect everything on it. Saves on buying and hooking up jumpers.

I use these...

https://www.allelectronics.com...erminal-block/1.html

and tie connections together with u shaped bare wire jumpers. There is an upper row and lower row, so there are two screws for each connection. I put the jumpers in the top row and the feeds to loads in the bottom row.

@David Tuttle posted:

I am new to model railroading and need to find a cost effective way to attach a group of wires together from lights and then run one wire each to the transformer for both the positive side and negative side. I am not even sure what the device is called or where to get it. Thank you for your input. 

I also use terminal strips.  I got mine from amazon, though any of the listed would work for you.  A couple of additional notes.  I use crimp on connectors on all of my wires and can get 3 connections on a single terminal if I need to though I usually dedicate one to a terminal.  If you use bare wires you could get more.  Also the jumper strips can be cut to size as needed so for example an 12 terminal pair strip could have six terminals jumped for + ( maybe red ) and six jumped for - ( maybe black ).  Or any mix you like.

I find that terminal strips make for a neater wiring job, easier changes, and much easier debugging.

Bill

Here's a thread I posted in April:

https://ogrforum.com/...terminal-block-video

I have been using the MTH units.

Below:  Four AC transformers or four DC power packs are individually D.P.D.T. switched into four 12 or 24 terminal fed power blocks of the RR.  This way any engine can be run on any power district.

Of course my RC battery engines can go any where at any time.  Last week I was able to run my trains during a neighborhood power outage.   That sealed the deal,  I just added three module peninsulas which may never be powered.

Some additional terminal strip jumpers:

@David Tuttle posted:

I am new to model railroading and need to find a cost effective way to attach a group of wires together from lights and then run one wire each to the transformer for both the positive side and negative side. I am not even sure what the device is called or where to get it. Thank you for your input. 

Since you are referring to pretty low voltage supply to lights, i.e. 12Volts DC or less, supplied from a light duty, variable out-put small transformer (the MTH trolly car transformer worked great for me, set at 10 1/2 volts for all the 12 V bulbs on the layout), you shouldn't really require a terminal board. I simply used 2 brass wood screws, screwed into the bottom of the layout, about 4 inches apart. I ran 2 VERY small wires from the transformer, and soldered one to each brass wood screw. I then ran all the wires under the table from the lights in that area, to the wood screws and wrapped the wires around each wood screw (soldered them later). Simple and effective.

If you only have 3 or 4 lights with small gauge wire, you could also use a simple wire nut to join all the ground light wires together with a wire coming from the negative terminal on the transformer and the same with the positive side. That's pretty cost effective.