The thin cable for my cyclocomputer touched the tyre and because of that, the signal to the computer interrupted. I tried to fix it and used another cable, but without success. So I made a phone-call to velomobiel.nl ; they advised me to buy a new cable. The hole in the wheelbox is 8 mm and is precise the diamater of the sensor.
I ordered another cable for Cateye in the nearby bike shop and then was curious how these kind of sensors work. So I opened the old one to have a look………….
Quite simple stuff . I think my plan didn’t work because the resistance between the two cables was too much.
I have ordered the Cateye enduro extra long cable, because then it will be easier to dismantle the front tyre for maintenance .