I'm struggling to figure out how I wire this cheap aliexpress light with a rear light.
I've test wired it like pictured by holding black and yellow to the connectors and both lights work.
I'm confused as what the red cable is for as it doesn't seem to do anything. I originally thought it was for connecting the rear light to but that doesn't work.
Is the rear light okay to be spliced directly to the cable from the dynamo? I was under the impression it couldn't take the full power so needed to be wired from a front light but can't see an obvious way to do that.