After a long - endlessly seeming- time of waiting for delivery - it is ABYSMAL- I got my kit and installed it easily - since it was already the 2nd kit I bought, everything was done quite fast. 2 problems though: - The harness of the GO set is way too long for my normal 28/bike 29” - can I order a shorter set? ( fast delivery would be appreciated) - what’s missing in both sets (go and the 1st system) is a connection for the head and tail lights on bicycles with a hub dynamo. That is very bad and unsatisfying. And l assume it would be easy to use the power pack to supply both lights. Bye, Ferenc