NO SPARK. need suggestions

[bubsyfz450]

I have a 05 yfz that me and my dad built. all the wiring is there, when you push the starter button, the motor turns over, but when we pulled the plug out, (which is brand new) and put it metal to metal, there is no spark. any suggestions would be greatly appreciated. Thanks
Bubba

[woodsrider4ever]

make sure all the gronds ar connected all the connectors are in fully and use a voltage meter to see where the connection is getting lost hope that helps