damibod

Ive got a xt125r yamaha my headlight went out then bike cut out if i take relay out ignition comes on and bike runs but no headlight wen i put relay back in bike cuts out as ignition goes out iv tried new relay but stil same

My xt125r yamaha wont run when relay which runs headlight is in it starts but cuts out and ignition goes out if i take relay out ignition back on and bike runs but no headlight carnt seem to get to the problem and sick of bus HELP