Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Alarm horn replacement


Recommended Posts

Does anyone know if it is possible to replace the alarm horn (located beside the battery) with an aftermarket alarm siren. I have a spare aftermarket alarm siren and would to use it in place of the factory horn, which seems to be defective anyhow. I have a 97 Boxster and have performed many of the "open circuit" tests that I have read about on here and get no sound out of the factory unit at all. The only thing that worries me is the "floating" 9.1 current that the connector reads at the horn plug. Any advice would be appreciated.

Link to comment
Share on other sites

Not sure about aftermarket horns but I replaced my 986S horn part 996 637 117 03 from Pelican Parts, was only around $12 (east pacific pesos!).

I also had a stray current at the horn connector, I don't have the circuit diagrams handy, but I remember there is a monitoring circuit flowing.

Link to comment
Share on other sites

Not sure about aftermarket horns but I replaced my 986S horn part 996 637 117 03 from Pelican Parts, was only around $12 (east pacific pesos!).

I also had a stray current at the horn connector, I don't have the circuit diagrams handy, but I remember there is a monitoring circuit flowing.

Thanks for your help mattatk! I found the replacement part on Pelican parts, hopefully this will fix my problem.

Link to comment
Share on other sites

  • Moderators

The alarm horn is like a normal 12 volt horn. Remove the horn and test it with a 12 volt battery. If it does not make noise then there is an adjustment screw. The screw is covered with a plastic plug. Remove the plug and you can then turn the screw in or out. If you turn the screw while it is hooked up to 12 volts you might get it to work. I was able to get a "dead" horn working this way. But it sounded funny so it was replaced.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.