I need to know what fuse's and relay's go for what in fuse box

All questions need 'year make model', so impossible to answer.
https://www.fixya.com/users/jim-rotta

It is unlikely that the trunk solenoid needs a relay as it is a low maps draw.

Google

year make model fuse and relay diagram

All automotive fuse box diagrams in one place ' Fuse Box ...

https://fuse-box.info Fuse box diagrams presented on our website will help you to identify the right type for a particular electrical device installed in your vehicle.

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On this website (link below) you find fuse box diagram and description for Citren Relay II (Citroen Relay II)

http://www.autogenius.info/en/citroen-relay-ii-fuse-box-diagram

If you have already checked the relay and fuse then have someone bang on the fuel tank hard while you crank the engine, if it starts then you know you have a bad fuel pump.

You have a relay there are 2 speeds low speed and high speed this is controled by a cooling fan module if you changed fan and it does not work then you will need to check the fan module, first the relay its in the engine fuse junction box High speed is marked on the relay C1056 and low marked C1058, here is what you can do go to the high spped relay open thhe cover and expose the relay with key on collapse the relay does the fan come on? if it doesnt replace the fan module if it does you will still have to replace the fan module here is the location is at the radiator on the front (may be under shroud)

How do you know its a bad relay if you dont know where it is?

relay 13 is abs pump relay,relay 14 is abs relay
If you look at fuse box,there is a row of fuses,other end row of relays
You need to check second row relays,far left and next right

on the central fuse box inside the vehicle there are fuses 12, 10, and 2
on the under hood fuse relay box 7,17,25,16.
check those and report back.

the cooling fan relay is not in the fuse box.

it is a solid state relay bolted to the radiator core support just behind the bumper

uoe can retrieve that on line for free All I did was goggle mercury cougar 99

Under the hood is a relay box and after you take the lid off of this relay box it will tell you inside the lid which relay is for what thanks jerry holler if you need more.