I replaced mine a couple years ago. The lengths are marked on the cables jackets. They are Teleflex cables and there is a minimum radius specified for the cable to bend around corners. One of my OEM cables was too tight a radius so I went up a size on length. It's a bit of work pulling the pedestal apart to get the cables in and out. You need to loosen the steering cables at the quadrant, take off the compass, etc. I had a frozen screw in the pedestal housing, very long screw with a slotted head, couldn't budge it, tried PB blaster and no luck. I finally cut the head of the screw off with an oscillating tool. Once the housing was off I used more PB let it sit and kept working it back and forth with vice grips on the shank. After many expletives I got it to break loose. I bought long hex head bolts to replace the screws and used never seize on the threads. That way next time I can use a socket and ratchet wrench to get them out. Steel screw in aluminum housing is bad without a helicoil insert and no zinc chromate primer. You will need to take the chain off the sprocket, and unbolt the clamp on the pedestal a small nut below the wheel, that holds the cables inside the pedestal. I think I pulled out the shifter and throttle levers and cleaned and greased everything while at it. I might have pulled out the shaft for the wheel and chain sprocket not sure if I remember but I know I greased the chain. Sounds harder than it is. Most of my time was spent on that one frozen screw. Otherwise it's maybe a couple hour job. There is a little clamp on the throttle cable jacket that provides friction so the throttle setting stays steady you'll need to use that on the new one. Good luck.