You can find wiring schematics at your local library as they usually have motor manuals there.
where is Horn relay on 1996 buick century.??
Where are the relay switches on a 1999 Buick Century for the headlights
The 1996 Buick Century horn relay switch is located behind the dashboard. The relay switch will be on the drivers side of the dashboard.
Check your wiring, but it is most likely the relay that selects bright or dim or a fuse.
in the middle
Where is the fuel pump relay located on a 1996 buick centuryRead more: Where_is_the_fuel_pump_relay_located_on_a_1996_buick_century
it would be in the relay box under the hood
at the buick dealership---locater manual and in electicalwiring shop manual.
It probably is wiring or relay.
Swap it with another like relay.
check fan relay/fan relay control module
call your local parts store.