Thanks for the information.It depends on where the cable exits. Some come out at the top and some at the bottom. Also, even if it comes out the bottom, on some frames there's enough gap to wiggle the cable through. Best to get one with the cable coming out the top, then you don't have to worry.
One thing to look out for, there are often cables that run under the seat tube, so make sure nothing goes low enough to rest at or bump on the bottom.
Ok thanks i will remember that.Hi welcome
I can’t add anything more to the above route wise
I’ve fitted loads and there’s many variations of cable routing
One extra thing Always make sure you have enough outer cable to allow the seat post to be adjusted and make sure the outer runs free to allow the adjustment