John_V 

Those wires are very fine single stranded, sometimes braided, and very fragile wires. Even if you are very careful, stripping insulation off of cables that small will most likely end up with breaking some of the wires in the cable. I don't know what kind of computer you have, but some wired computers are made for recumbent bikes and trikes. Cateye used to have an optional, extended harness for use with recumbents but I don't know if it's still offered and what model(s) they are available for. However, most of the recumbent bikes and trikes that I've seen, including my wife's trike, use wireless computers, especially if they are tracking cadence. Many also use a speed and cadence sensor connected to their phone, using Bluetooth, and use a cycling app rather than a bike computer.