I have a 2004 Ford Expedition. What # fuse is the cigarette lighter.

They are listed in the manual and here is the information, the fuses are under the hood in the power distribution box.
FUSE# 71 20A** Auxiliary power point/cigar lighter
FUSE #72 20A** Auxiliary power point (right rear quarter panel)
Attached is the pdf owners manual, in the document the fuses are listed on page 294.

http://www.fordservicecontent.com/Ford_Content/catalog/owner_guides/13exdom3e.pdf

Assuming this is for the same vehicle as you asked about back in March, see 2006 ford explorer xlt fuse box diagram Google Search

is battery dead?

The fuse box is inside the expidition left side drivers seat

The lighter socket or the element.
Check the element for burn marks and the socket for debris blocking the contacts.

Hi, the diagrams are included in the owner's manual starting on page 129. You can download one here: https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

The lighter fuse is in the inside panel (by the brake pedal, fuse #3), and the others are in the box under the hood (#10 and 11).

Check them all

Buy an owners manual

The fuse number is 41 20A yellow mini fuse. Below is the manual the fuse number is on page 199. The diagram of the fuse panel is on page 196.

2004 Ford F150

Hope this helps.

Zeppelinx12

no there is only one fuse and its usually listed under the acc . on the panel most fuse panels are either in the glove box or on the drivers side dash as you open the door or under the dash and some are located under the hood one of these areas is where you will find the panel

Fuse no.1(20amp) in the under dash fuse panel is for lighter.
Fuse no.9(20 amp) in the under hood fuse panel is for the power point.