Brown is usually switched live so only works when ignition is on
My bike is older than yours but a brown wire goes to kill switch I think
If the wire won't solder scrape a stanley blade over it until the copper is shiny rub some flux on twist them together an try again I bought some £7,solder it works much better than the cheap stuff
@SpookDog I have a bike I'm building with an 05 dtx engine I'm trying to do a crossover of parts the bike has spark with it's cdi but won't fire so I would like to try my dtr cdi on it last time I did so I couldn't get a spark since my dtr needs to be stripped down I figure nows a good time to try again
Just find the one that’s giving out 12v when the lights are on. Then 12v only when the brake is on. My headlight/taillight doesn’t work unless the engine is running. The brake light works from the battery...
Try doing it ticking over. The black will be the earth. You’ll get it, it’s just a process of elimination