Problems With Plane Light Control?

Hello I am working a plane light control script I have everything set and look right. But in the output it says, STROBELIGHTS is Not a valid member of player. The function is when the script.Parents Background color is equal to a certain color the Lights come on.

Here is my code:

StrobeL = script.Parent.Parent.Parent.Parent.Parent.Parent.Parent.STROBELIGHTS.StrobeL.White.Light
StrobeR = script.Parent.Parent.Parent.Parent.Parent.Parent.Parent.STROBELIGHTS.StrobeR.White.Light
StrobeL2 = script.Parent.Parent.Parent.Parent.Parent.Parent.Parent.STROBELIGHTS.StrobeL2.White.Light
StrobeR2 = script.Parent.Parent.Parent.Parent.Parent.Parent.Parent.STROBELIGHTS.StrobeR2.White.Light
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function On()
     script.Parent.BackgroundColor3 = Color3.new(0,255,0)
end

function Off()
     script.Parent.BackgroundColor3 = Color3.new(255,0,0)
end

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if script.Parent.BackgroundColor3 == Color3.new(255,0,0) then
    StrobeL.ImageTransparency = 1
    StrobeR.ImageTransparency = 1
    StrobeL2.ImageTransparency = 1
    StrobeR2.ImageTransparency = 1
end

if script.Parent.BackgroundColor3 == Color3.new(0,255,0) then
    StrobeL.ImageTransparency = 0
    StrobeR.ImageTransparency = 0
    StrobeL2.ImageTransparency = 0
    StrobeR2.ImageTransparency = 0
end

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script.Parent.Parent.On.MouseButton1Down:connect(On)
script.Parent.Parent.Off.MouseButton1Down:connect(Off)