question Zetor 5340 supply to instruments

[DaveOLW]

On incerting key, insruments usually come on, but today nothing, fuses all ok. Thought it was Key switch took it out but that is ok.
Drawing shows 4 wires mine has 5 wires, shows it operating relays where are they?

Thanks David

 

[diyfarmer]

Is your battery terminals in good order and the battery OK? Have you a master switch? It's not corroded, or the earth straps