[Phantom]

With turning the lights on and the car hesitating, I would say do your self a favor and check all the grounds. Disconnect the battery and trace all the ground wires check the ring terminals clean off all rust and dirt apply dialectic grease. If you have wiring diagrams this can be easier since you can see where and how your car is grounded.

If there is corrosion and dirt between any of the connections it can create a situation where it can get the electrical signal but the circuit is having to work harder to get it there.