I've got an Accord, and under the hood is a label with "Vacuum Line Routing Diagram" printed on it. Start there first.
a Honda shop?
A wiring diagram, for your 1999 Honda Civic, can be obtained from most Honda dealerships. The wiring diagram can be found at most auto-parts stores.
Answering "Where can you find an online diagram of the underhood fuse box on a 1999 Honda civic ex?"
How do you repair 1999 Honda Civic Horn?
can we adjust the clutch on honda civic 1999
what is the fuel tank capacity of 1999 honda civic
Yes, it is the same starter for both.
will parts from 2001 honda civic 4 door fit a 1999 honda civic hatchback, such as front doors, hood, muffler
Yes.
No.
not without major modifications
One can find the resale price of a 1999 Honda Civic when one goes to the shop of Auto Trader or any dealers of used cars. A 1999 Honda Civic is about $3000.