I have a 1991 honda accord EX and my clock doesn't show up when my car is on and my seatbelt doesn't automatically work when the car is on too.

Have you checked the manual to see if it shows you. I have a Honda and I have 2 fuse boxes. One under the hood and one under the dash. You can also call a dealership and ask for service department and ask them

I have a 1993 honda accord ex that leaking water behind engine near my oil filter it was leaking water above it How do I fix the hose show me how

You will have to use the seatbelt to strap that in using a seatbelt lock that is provided with the carseat.
Also read this

Have a look here for the fuse box diagram.

You should take it to your Honda dealer for repair. Honda has a lfetime warranty on seatbelts. See below.
While seat belts cannot completely
remove the possibility of injury,
they do provide a very significant
level of protection when used
properly. Honda believes the best
way to enhance your safety is to
use your seat belt. To encourage
their use, the seat belts should
always be in good operating
condition.
Time Period
This warranty continues for the
useful life of the vehicle.
Warranty Coverage
Honda will repair or replace, at its
option, any Honda seat belt
component that fails to function
properly during normal use. This
includes all parts and labor
charges.
This Warranty Does Not
Cover:
• Replacement of a properlyfunctioning
seat belt assembly
strictly for cosmetic or comfort
reasons.
• Failure caused by abuse,
alteration, accidental damage,
misuse, or malfunction resulting
from a collision.

you have to replace the clock, there is a electronic fault in the clock.

Check the fuses.

automatic-dexronII
standard-10w30 or 10w40

you mean the cooling fan? for the rad the relay is under the hood by the battery in the fuse and relay box

change your fast idle thermo valve