I have taken the leap and bought the Thunderbird horn. I have tested it on the bike and it does have a different deeper tone but can't say it is a lot louder. I have decided to do the freak horn and keep the original horn and add the Thunderbird (FIAMM) horn just below the OEM. Should make quite a racket (high tone and low tone). My question is wiring up both horns. The OEM is 12v and pulls 3 amps. The TB is 12v and likely pulls 5 amps. The fuse is a 10 amp but also covers the turn signals and brake lamp. Can I just spice into the OEM horn wiring and run both off the same circuit? Anyone have experience with this?

I will post some photos when I get it installed. I have created a bracket to tuck the TM/FIAMM horn in below the OEM and it should look good.

Last edited by pharmboy327; 08/23/2009 12:27 AM.
05 BA, Goodwood Green, Chevy605 pipes , ai removed, Freak kit, K&N pods, 145 main/42 pilot / 3 turns out, bags and screen