horn question for a 75..., P.O. put in aftermarket horn, need advice going back to original Options

[DRPHIL914]

I see there are afew sources for original horns, and I really don't need an original one, what I would like is a LOUD one, the aftermarket one pooped out on me when I needed it the other day. I have several questions.

1. is the original horn on a 75 under the bumper like in other models? mine is some type of air horn that is under drivers side left of gas tank , and there has been some rewiring done here - so that may need correcting too and I hate wiring, which leads to the next question
2. what wires are for the original horn - I have wires in the front trunk that are not connected- don't know what they are for, they are not for fog lights, those are connected., but thought they might be for the horn possibly,
3. ifnot original, what horn is best? is there one that goes into stock location but is louder, or is the stock one sufficient? ive not had one and not sure ive heard and original one so I don't have anything to go on.

thanks for the help

Phil