tank display+ coolant display

hi,
I keep showing the ads named in subject
during the ride from...
I have also observed that after starting the engine at first no indicator success (both pin 7 o'clock position)
Then click it(relais) somewhere in the deep of the keyboard...then go the displays...
someone a guess what it can be?
contacts from the donors already cleaned...nothing brought
it also defends well to know where exactly the temp encoder sits...(I found something on the right head..with two pole..
pink plug..but I guess the one for tax is raced)
ciao