go to the contact switch; and if you turn the key in start position; you should get voltage on the thicker blue/yellow wire.

if you get voltage there; go to the fuse box. there is 1 black relais in it, next to it there is a brigde. measure onto that bridge and get a ground on the - battery connection and put the key in start position.

if you get voltage there; replace the connector on the starter solenoid