Quoted from Digduglus:
LOTR didnt come with all switches connected. Any help identifying where these go would be greatly appreciated
All you have to do is look at the color of the 2 switch wires, then locate the switch that uses those colors on the switch matrix.
For example if your connector contains a White wire with an Orange stripe and a Green wire with a Blue stripe, it would go to switch 43 (Left Top Lane).
If you are still unsure of the location, you can fine the switch number on the playfild switch locator shown below.
One of the connectors you show has red and yellow wires, this is not a switch connector at all, its a lamp connector and you dont want to put this in the wrong spot. It should be fairly easy to find out which lamp isnt working, or you can look it up in the lamp matrix using the exact same process as the switch matrix.