Originally Posted by
Greg T
Does the brand name matter? Meaning they might use different ends that may not fit in brake handles or shifter.
Derailleur cables have two different end fittings, one fits Shimano and SRAM, the other (smaller) fits Campy. The probability of your wife's bike being Campy is nearly zero. Brake cables also have two different fittings, one for road levers and one for MTB. Many cables come double ended and you just cut off the unneeded end.
Take the bike to a bike shop and they will be sure you get the correct cables and housing.