Re: Telefex Steering System
Depending upon what the price is, it still might be in your best interest to buy the used system knowing full well that you'll have to replace the cable. (You can get the price of a new cable right here on this web sire.) At the end of the day you still might end up with a system - even with a new cable - that is significantly less than an entirely new system.
There are guidelines for "measuring" and thereby estimating your required cable length. I have some hits and some misses doing this. However, once you have an actual cable in hand and can route it through the boat, then you can determine exactly how much longer (or shorter) it needs to be.