spookey

im doing a d reg tzr 125 up that i got as a non runner. ive not been getting a spark but when i dissconnect the black and yellow wires from the cdi i do, i was wondering what the black and yellow wires do, and where they are ment to go. because im stumped

im doing a d reg tzr 125 up that i got as a non runner. ive not been getting a spark but when i dissconnect the black and yellow wires from the cdi i do, i was wondering what the black and yellow wires do and where they are ment to go. because im stumped