They don't hook them up. If you bought it at a dealer, make him hook it up for you.
It is the same as my '01 Focus. The schematic is here: http://www.modifiedlife.com/2001-ford-focus-car-stereo-wiring-diagram/ Basically it will tell you what color wire does what
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Fuse # 47 / 20 amp / Cigar Lighter , Power Point ( according to the owners manual )
No , in a 2000 Ford Focus : Fuse # 34 is a 20 amp fuse for the horn and Fuse # 46 is a 15 amp fuse for the cigar lighter
Get a Repair Manual at NAPA, or Auto Zone.
go to Mitchellondemand,com
Check this website: http://www.focusplanet.com/downloads/focusmanuals/2003/2003_focus_owner_guidemanual.pdf
wiring wire harness cooling sistems ford focus 2002
http://www.the12volt.com/installbay/forum_posts.asp~TID~61916
Diagrams for the electrical aspects of items ensure any changes are done correctly. The stereo wiring diagram for this car is found in the maintenance and repair manuals.
In a 2000 Ford Focus the fuse for the cigarette lighter is fuse # 46 and it's 15 ampin the fuse box behind the glove compartment
I doubt you will find that for free, but you can buy them at low cost from ahdol.com