I installed the NAPA horn yesterday on my 09 Heritage. Bolted right up and fit in the Cowbell like it was mad for it. Much better then the stock horn!

DragonSlayer, I love the engraving on your Horn cover. I might have to do something along those lines.

 

I bought the napa one but it is not as loud as the stock one. Is a wiring/relay job necessary to make the napa one louder ?

 

If this Napa horn will fit under the cover of a '05 FXST..... Part number please?

 

Another option is the Signaltone Fiam Electric Horn Low-Note Freeway Blaster. Under $7 and fits right in the cow bell. 130 db. Three minute install.

 

Here is information on the NAPA Horn (130 db):

Item#: BK 7301056

Price: $17.69
tax and shipping not included

Disclaimer: The stated price may vary from the in store price and may change at anytime.

Item#: BK 7301056

Attributes:
Style Name:Replacement Horn - Freeway Blaster
Material:Steel
dB Level:130 db
Horn Note Type:High Note
Product Features:420 hz
Current Draw 5
Power Source:12 Vdc
Dimensions:9-1/4" L x 6-5/8" W x 3-1/2" H
Outer Finish:Corrosion Resistant
# of Terminals:1/2

You may want to try Steel Tattoos as they have a better reputation.