You can get housing end caps that are one unit, but open at both ends with a separator in the middle of the cap, ergo, you need two pieces of housing of the correct lengths. Or, you can use two housing end caps with the closed end back to back, and the same with two pieces of housing. The cable runs straight through either option. With the back to back caps, you could wrap them with tape of the same color, but it is not necessary. Either way, can be seen only from close up. They work just like the cable stops on the frame.

Using just tape to splice the housing together will work, but not work that well. the connection just is not stiff/strong enough, IME.