Help pink wire

Hi I've got this pink wire issue I have a Honda benly 110. 2016 model just put new ECU in it out of the same model bike I bought it smashed front end now it had no key just three wires hanging there black wire red and black wire and pink wire now my mate got it running with the zenner diode connected just temporary so I decided to take it of and do it properly but now I can get it to prime or give spark it just turns over and that's it fuel pump make a funny shitty sound but it's not actually primeing it's a muffled sound can someone tell me which zenner to use and where to put it and do the wires have to b connected in some sort of Oder cos it's driving me nuts