Cart won't turn display on

Ok here is what I got. 2015 e6 turn key switch 8 out of 10 times it works as it should. So I recommended replacing switch replaced everything seemed fine cart comes back a week later same issue but now sometimes the display will show up but is super confused as in all lights in display light and then blink. I have narrowed it down to the pcm or relays just in 20 years I have never replaced either of the items. So let’s hear y’all’s thoughts