Where possible, always try yourself first.
Then if its to much, or dont work right, call in the pros, hehe
does it have one now?
If so, study how it is routed through, and how its connected at each end, before you pull it out, when you pull it, just go slow, and remember how, and reverse things you did.
I never did one of those, but it cant be any harder then a speedo cable, and those arnt real hard.
Most of the time it is the lack of rooms that get you. Ending up have to remove or unbolted other parts just to get to where you wanted to go. Small hand and tiny little fingers help too..