RV Repair: Tail lights, metal siding, ground wires

Question
Hi Shawn,
I've got a 1986 Scamper trailer that I'm attempting to replace the tail lights on. I went and bought two all in one tail lights but the wiring is confusing me.  The lights I bought have a red, green and black wire as well as two ground wires for each bulb.  On my trailer, the driver side has 3 green wires, 2 blue wires and a red.  The other side only has 1 green, 1 black and 1 blue wire.  I'm trying to figure out how to match these up or if the lights I bought will even work.  Please help!

Answer
Well any light will work you just have to wire them up properly.  With your new lights they should be marked like tail which would be running lights and and then turn which woul be either left or right.  As for your trailer the wiring sounds like it has been redone at some point cause green is usually for running lights and brown is right turn and red is left turn and white for ground or sometimes the metal siding that the light is attached too is ground. With a 12 volt test light you can run your signals and running lights and identify them this way which would be your best bet to be sure.