OK I am not sure how is best to present this so I am going to start off with how to set up a LED circuit then I will try to show how I mounted my lights in my rhino.
when you are setting up your lights you need to look at what you want light wise and what parts you can get as there is no pre set voltage all LED's need and if you don't know you cant order the rest of what you need.
so for the example I am using I will be using two 3mm White LED that uses 3.4V and two 3mm flashing red LED uses 3V at 20ma we should also look as how we want to power this and seeing it is a cheep hobby project one nine volt battery should do (nice 9v connectors are cheep) the only down side is that in choosing this supply you have to make sure you are running in parallel not in series.
if you hook them up in series you have to add up the voltage from each LED and sense we have four that take up three volts or more they would need a 12V or greater power supply.
But by hooking them up in parallel they each get the full 9v from our battery.
325 or slightly better these are 330 and will do just fine
(NOTE: if you don't want to do any of the above calculations there is an app you your phone called ElecrtoDroid and it has an LED resistor calculator you can just punch your numbers into. But I would jump what ever it says up a bit as it is giving you the absolutist minimum resister you can get away with if you want your LED to last go up one or 2 standard resister sizes to make it last)
last but certainly not least we need a way to control this little circuit. you could just disconnect the battery when you don't want the lights on but who wants to do that when you can hide a nice little switch some where and make your set up a little more slick. I like These dip switches they are easy to hide you will also need a bit of wire this works and a place to hook everything into is also help full I like these and you can trim them after you build your circuit later I suppose it bares mentioning that you need a soldering iron get something with higher wattage it is only a few dollars more then the low wattage ones and will work better for you if you want to keep doing this kinda thing.
you also need solder thin is better you are making small connections so if you want any control you only want a small amount flowing into you're connection at a time.
Now you have a small pile of junk lets turn it into something useful for you
Next solder the connection for the resistors that connect to the switch and also solder the red positive wire from your 9v snap connecter across both of the other connectors for the switch.
Desoldering braid or Vacuum Desoldering tool. I use the braid because well that is what I have on hand but basically you just lay the braid over the joint that you wish to remove solder from and press the soldering iron onto the top of the braid and it will wick the solder into the braid and away from where it is currently
heat shrink tubeing
I poked all three threw the board in a row then placed them down across each other and soldered them all in the line you see above.
yep the white LED's work fine
Now its just one to normal modeling stuff that your guys are all ready good at I wish I had something to install it in as an example but I lack anything that would work so hear is some shots of my completed rhino that should give you some ideas on mounting the switches and lights