Detect player pressing buttons on a seat?

Hello, I am struggling with this, I am trying to make a game that will involve vehicles that can perform functions when the player in the driver seat presses buttons. For example, if the driver was to press L, it would run a function like this to turn the lights on.

local toggle = 0
function lightsOn()
	if toggle == 0 then
		toggle = 1
		lights.Material = "Neon"
		lights.Spotlights.Enabled = true --Yes i know lights.Spotlights wont work, its just metaphorical
	elseif toggle == 1 then
		toggle = 0
		Lights.Material = "Plastic"
		lights.Spotlights.Enabled = false
	end
end

But I cant find any way of detecting the player pressing a button only if they are on the seat. I always hit a brick wall, I have tried accessing the player through the seat weld then discovering you can only use Player.GetMouse() in local scripts, I have also tried reverse engineering plane seats because they use P for full speed only to remember they use a tool. I really don't want the player to have to use a tool while in the seat because they will be using other tools while driving. all i'm looking for is a way to be able to make any button on the keyboard do something as if you were clicking a part using the ClickDetector. I would like multiple buttons per vehicle and also there will be many vehicles so I don't want any of the vehicles interfering with each other. If anyone can help I will be very grateful.

We will be using UserInputServiced and Humanoid.Seated property

local UIS = game:GetService("UserInputService")
local debounce = true
local player = game:GetService("Players").LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
UIS.InputBegan:Connect(function(input)
	if input.UserInputType == Enum.UserInputType.Keyboard then --make sure the press is from the keyboard
		local val = input.KeyCode.Value
		if val == 108 then --108 is L
			if character:FindFirstChild("Humanoid").Seated == true then
				if script.Parent.Occupant.Parent.Name == player.Name then--Assuming the parent of the script is the vehicle seat 
					if debounce then
						debounce = false
						--do thing
						debounce = true
					end
				end
			end
		end
	end
end

Sorry if this didn't work for you