Annoying Speedometer Noise at Cluster

From your OP.. "Now, its jumping so bad at low speeds its not even legible. It levels out at like 40mph, which is way lower than my actual speed.",

that sounds like the cable hasn't engaged the speedo gear or head properly,, and is slipping.. - take the cable off ,, and pull the inner cable out an inch or so,, feed that into the square hole in speedo head,, then slip the outer jacket up to connect..

You may still have a tight bend in the cable somewhere..

The cable goes in the back of the speedo,, and spins a magnetic disc,, the magnetism lifts the needle off the pin,, the faster the disc spins, the higher the needle goes.. For the needle to waver,, the disc has to speed up and slow down,, now if there was a drag on the disc inside the speedo,, it would likely just slow down,, but it's possible,.. If the needle was sticking it would stay high at times,, or not return to zero.. The most likely place to cause a speeding and slowing of the disc,, is a cable binding somewhere,, getting bound, then springing free, thus the needle movement,, anyway,.. but make sure its properly engaged first..


hope it helps.. cheers..