alewis220 Posted November 1, 2017 Share Posted November 1, 2017 I would like to install the Piaa Sport 400/500 horns on my 17 legacy. Can anymore help me on what is needed to install these? or is there any other oem horn that is PNP that sounds better than the one on the 17 legacy? (from another model or year etc.) Thanks in advance! Link to comment Share on other sites More sharing options...
alewis220 Posted November 1, 2017 Author Share Posted November 1, 2017 I think i got it, wire from factory harness to new horn positive (+), then new horn (-) to chassis ground with new wire. Link to comment Share on other sites More sharing options...
tornichoe Posted November 1, 2017 Share Posted November 1, 2017 My Outback sounds much louder than the legacy. Don't know if you can just get one off from a junkyard somewhere for cheap and do a swap. I know the OB has a bigger battery. Don't know if the horn power is too much for the little legacy battery. Has anyone tried to do this swap? Link to comment Share on other sites More sharing options...
alewis220 Posted November 1, 2017 Author Share Posted November 1, 2017 thanks c3156! tornichoe, i noticed that our legacy battery is tiny compared to other comparable sized cars. I m surprised its that small considering the amount of electronics on my 17' legacy. Link to comment Share on other sites More sharing options...
ammcinnis Posted November 1, 2017 Share Posted November 1, 2017 My Outback sounds much louder than the legacy. The 2015/2016 Legacy uses the same horns (i.e. same part numbers) as the 2015/2016 Outback. I know the OB has a bigger battery.The batteries are the same, Legacy vs. Outback. The 3.6s do get a slightly higher capacity battery than the 2.5s, but they're all the same physical size: BCI Group 25. That said, if battery size is the limiting factor for horn performance ... then you have BIG problems. "If you don't know where you're going, any road will take you there." ~ The Cheshire Cat (Alice in Wonderland) Link to comment Share on other sites More sharing options...
alewis220 Posted November 1, 2017 Author Share Posted November 1, 2017 ammcinnis, thanks for the feedback! Link to comment Share on other sites More sharing options...
GTEASER Posted November 1, 2017 Share Posted November 1, 2017 Congrats on the mod status ammcinnis!!! GTEASER's 2012 Legacy GT - Sold GTEASER's 2009 XTeaser - Sold GTEASER's 1992 Legacy SS - Sold Link to comment Share on other sites More sharing options...
ammcinnis Posted November 2, 2017 Share Posted November 2, 2017 Congrats ... ammcinnis!!! Thanks for the support. Now ... back to your regularly-scheduled thread. "If you don't know where you're going, any road will take you there." ~ The Cheshire Cat (Alice in Wonderland) Link to comment Share on other sites More sharing options...
tornichoe Posted November 2, 2017 Share Posted November 2, 2017 The 2015/2016 Legacy uses the same horns (i.e. same part numbers) as the 2015/2016 Outback. The batteries are the same, Legacy vs. Outback. The 3.6s do get a slightly higher capacity battery than the 2.5s, but they're all the same physical size: BCI Group 25. That said, if battery size is the limiting factor for horn performance ... then you have BIG problems. Ah! My OB happens to be a 3.6 Guess the 3.6s across the models get bigger batteries, alternators and horns. Link to comment Share on other sites More sharing options...
ammcinnis Posted November 2, 2017 Share Posted November 2, 2017 Guess the 3.6s across the models get bigger batteries, alternators and horns. No. 2.5 battery: JIS 55D23R (48 AH, 356 CCA), BCI Group 25 3.6 battery: JIS 75D23R (52 AH, 490 CCA), BCI Group 25 Alternators: same ratings (130 A) Horns: same part numbers "If you don't know where you're going, any road will take you there." ~ The Cheshire Cat (Alice in Wonderland) Link to comment Share on other sites More sharing options...
tornichoe Posted November 2, 2017 Share Posted November 2, 2017 When I say bigger batteries, I mean capacity wise. 48AH vs 52 AH and the CCA numbers not physical dimensions. I'm surprised that the horn is the same though. my OB sounds much louder than the legacy. Link to comment Share on other sites More sharing options...
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