thx guys and dolls
the schematics would that be wiring? as i know i built it but it took something like 27 wiring diagrams to get there and i dont have a full one, i kept changing it as it didnt do what i wanted, so dumped last fitting and did it in my head, i could prolly list parts.
plumbing is inline and NOT! teed in to water system, i wanted whatever heat it gave before stat open to speed heating process up so its kept engine side of plumbing not radiator/stat side.
also another 2 relays or 1 relay that switches 2 contatcs need to go in aswell yet for 2 wires on fuel senders (low level warning light and fuel amount float) now i have tanks, 3rd wire can stay earths.
think i tried jioning low level warning light wires same as earth with no relay switching and it doesnt work so may have internal circuitry and not just on/off in senders?