My tail lights aren't working on my 2000 sebring . I have checked all fuses, but had to remove the horn fuse because alarm kept going off .

Hello Gay Woodley...

Car batteries are dangerous... (I'd rather douse myself in gasoline & play with matches than work on a battery)

but:

Several things need to be done to lay the groundwork for GOOD TROUBLE SHOOTING:

Modern cars (yours) can act pretty squirrely (alarm trouble) if the battery (or ground) connections are dirty, oxidized and/or wet... Going further into "a sophisticated" investigation without at least a look is pointless... and disconnecting the battery (while messing with your radio (might regain a level of sanity for your VARIOUS CONTROL UNITS/MODULES (ENGINE, BODY))... but I seriously doubt your tail-lights are related
*** (hard wiring fault... check grounds too)).

White lithium grease can reasonably "PROTECT" an electrical connection... but if it is heavily corroded or oxidized... it must be carefully cleaned (it can be quite caustic immediately at the battery and EXTREME CAUTION is warranted (eye protection, gloves & lots of fresh water (if things go terribly/explosively wrong (to save skin & eyes))).

***That (battery check) being done... you will need YOUR vehicle SCHEMATICS and a volt/ohm meter (see below) to find if your OPEN.

ALTHOUGH it is best to BUY your own... Your schematic (wiring) diagrams are available (free) from BBB Industries (also "some" at autozone.com... not quite as comprehensive... (registration required at both)).

BBB Industries includes some quite excellent Technical service bulletins (TSBs).

Hope this helps!

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Try removing the alarm system relay, some car alarm has also a fuse on the alarm that you can remove.
Many car alarms unlock by inserting and turning car key while you connect the battery.

i know this sounds crazy, but do you have break/tail lights?some cars shut off dash lites when tail/brake lights dont work

Thanks for choosing FixYa and welcome. Life up the hood and take out the horn fuse. I have seen multiple Chrysler's, all 1996, have the alarm going off. The horn blows, lights go off, and ticking. I believe there should be a fuse labeled "alarm". That is the one you want to take out. If it is not there, you can always take the horn fuse out. I am not for sure if yours is the black square fuses, but that is where it is on the 96 sebring and avenger. Hope this helps.

Dash circuit is open internally could you tap on it to make it turn on

If you have an after market alarm installed remove the in line power fuse from the alarm and see if that resolves the issue. I would look at the horn buttons on the steering wheel for the fault first as this is the most common area of a problem. If that checks out then you will need to check the horn itself. After that the only place left is the ECM or a short in a wire.

Let's assume you've checked the bulbs and are happy they are serviceable. Therefore you can examine the brake switch input and output (while pedal is depredded)Usually located in the pedal box area of the drivers foot well ! Good luck

If your horn is not working and your inside light is not working either your fuse has been removed. (Located on the left side of the steering wheel) pull back the plastic handle and use the chart there to see if the fuses are all in the correct spots. If this is not the case you may have to have the fuse replaced. Lastly there could be and issue with your horn assembly which is easily fixed and the dome light could be a seperate problem.

check for the complete fuse box and search for short circuits. Check the fuses and the amps of each. Did you change the battery for a new one? Did you install any device not OEM? An alarm? Check the cable system. If this is ok, scan it.

CIG.LIGHTER AND HORN ARE ON THE SAME CIRCUT... BUT A DIFFERENT CIRCUT FROM THE TAIL LIGHTS... CHECK THE FUSE FOR THE CIG. LIGHTER.. SHOULD TAKE CARE OF IT.