Installed K2 on my wife's bike at the weekend (third set I have done) and all was working fine. Checked today after a ride and no footage. Luckily I have a spare set here at the moment (destined for my new bike) and so was able to swap out and check all the components. Turns out that the system won't function whenever the front camera is connected. When swapping it for the spare front camera from the other set, all is fine.
Anything to try other than a replacement front cam? Also, any idea why it would have been fine on Saturday (albeit just recording my garage while I was working on the bike) and not today?