Attaching a trailer to a van

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Trying to weld a trailer to a van, any ideas?
Tried using Motor6Ds and WeldConstraints, but they don’t seem to work unless I’m doing something wrong.

local function weldTrailer(trailer,car)
    for _,part in pairs(trailer:GetDescendants()) do
        if part:IsA("BasePart") then
            local weldConstraint = Instance.new("Motor6D")

            part.Anchored = false
            
            weldConstraint.Part0 = car.DriveSeat
            weldConstraint.Part1 = part
            weldConstraint.Parent = car.DriveSeat
        end
    end
end

this was the function I used
image