Three usual suspects: #1 the switch contacts in the steering wheel can wear and get stuck together, or the wire running through the switches, roll connector (connects the part of the steering wheel that turns to the rest of the car that doesn't) to horn gets frayed and grounded or #2 the remote keyless entry (RKE) module is defective or #3 the wire from the RKE module to the horn module has frayed and grounded. Anything that grounds the "B" terminal on the horn will cause it to sound.
under the hood
NOT AT ALL
As far as I know, the horn is behind the driver's side headlight.
driver front fender inside
The water pump on a 1996 Saturn sl2 is located in the engine compartment. It sits below the AC compressor.
Junkyard
It does not have one.
Check the relays and fuses.
1993 Saturn sl2
Yes it will.
You should be able to switch the relay with the horn relay and then check to see if the horn works.
Get a horn at Autozone or somethin, and look down behind the drivers side headlights. Positive negative and ground are on top.