not sure on a 92 but I have a 97 Dakota & the fuse for the horn is under the hood. Check the fuse box on the left fender well. inside the cover should tell which fuse it is
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Check bulbs Check fuse Check the operation and adjustment of the stop light switch
No
behind the bumper and grill
Dodge transmissions do not use vacuum modulators.
no
No
Fuse 7 controls the brake lights. It should be a red 10amp fuse.
If you can't locate it in the fuse box on your kick panel, check under the hood. I do know that your horn relay is there and I think the fuse is too, but I'm not positive about the fuse.
5 quarts
check if there is a fuse box under your hood. That's where mine is but it is a 97.
Check the fuse first. If the fuse is good apply 12 volts directly to the horn. If it blows then the horn button on the steering wheel or wiring is defective. If not, the horn itself is defective.