[DeTomaso] Fwd: Re: Re: Re: Horns

[sobill at aol.com]

From: sobill at aol.com
To: jjdetrich at gmail.com
Sent: 2/21/2018 10:24:34 AM Pacific Standard Time
Subject: Re: Re: Re: [DeTomaso] Horns

Jeff,
 
My car didn't have splash guards in the front of the front wheel wells. The horns where totally corroded by water and dirt. I disassembled the housing, clean up the mess, cleaned the electrical make/break contacts, and good to go.
 
Inside the horn housing  is an electromagnet and a set of contacts. When 12V is applied to the horn, the electromagnet pulls the horn diaphragm in one direction thru the closed make/break contacts. The moving diaphragm opens the make/brake contacts and the diagram returns to the rest position. This cycle repeats and the horn sounds. The horn is just a big buzzer. IIRCC, the horn is tunable for tone. One horn is tuned to one frequency and the other horn is tuned to a different frequency. This difference in frequencies creates that unique "European" sound.
 
The horn has a single terminal for power. The horn body must must have a good electrical connection to the chassis. When you press the horn button on the turn signal stalk, you should be able to hear the horn relay close even if the horns do not sound. If the horns do not sound and you do not hear the horn relay close, likely the horn relay is the problem. A non-working horn relay can be disassembled and, likely, fixed.
 
The horn circuit diagram and relay location pictures are attached.
 
Let me know what you find.
 
Have fun,
 
SOBill
 
The main thing is to keep the main thing the main thing.
Do the best you can with what you have where you are.
Eat dessert first, life is uncertain.
In a message dated 2/21/2018 9:32:36 AM Pacific Standard Time, 
jjdetrich at gmail.com writes:
 
Original Pantera horns are as simple as a rock, easily disassembled, cleaned and restore to working order.
 
SOBill
 
 
Thanks to everyone that responded. I was under the impression that they weren't repairable. I think I'll do as SOBILL suggested and try to refurb mine. Sounds like a fun project!

 
And, SOBILL, thanks for the suggestion. Any suggestions on what needs to be done would be appreciated.
 
Jeff
6559




  2 Attached Images


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       _______________________________________________________________

     From: sobill at aol.com
     To: jjdetrich at gmail.com
     Sent: 2/21/2018 10:24:34 AM Pacific Standard Time
     Subject: Re: Re: Re: [DeTomaso] Horns

   Jeff,
   My car didn't have splash guards in the front of the front wheel wells.
   The horns where totally corroded by water and dirt. I disassembled the
   housing, clean up the mess, cleaned the electrical make/break contacts,
   and good to go.
   Inside the horn housing  is an electromagnet and a set of contacts.
   When 12V is applied to the horn, the electromagnet pulls the horn
   diaphragm in one direction thru the closed make/break contacts. The
   moving diaphragm opens the make/brake contacts and the diagram returns
   to the rest position. This cycle repeats and the horn sounds. The horn
   is just a big buzzer. IIRCC, the horn is tunable for tone. One horn is
   tuned to one frequency and the other horn is tuned to a different
   frequency. This difference in frequencies creates that unique
   "European" sound.
   The horn has a single terminal for power. The horn body must must have
   a good electrical connection to the chassis. When you press the horn
   button on the turn signal stalk, you should be able to hear the horn
   relay close even if the horns do not sound. If the horns do not sound
   and you do not hear the horn relay close, likely the horn relay is the
   problem. A non-working horn relay can be disassembled and, likely,
   fixed.
   The horn circuit diagram and relay location pictures are attached.
   Let me know what you find.
   Have fun,
   SOBill
   The main thing is to keep the main thing the main thing.
   Do the best you can with what you have where you are.
   Eat dessert first, life is uncertain.
   In a message dated 2/21/2018 9:32:36 AM Pacific Standard Time,
   [1]jjdetrich at gmail.com writes:

   Original Pantera horns are as simple as a rock, easily disassembled,
   cleaned and restore to working order.
   SOBill
   Thanks to everyone that responded. I was under the impression that they
   weren't repairable. I think I'll do as SOBILL suggested and try to
   refurb mine. Sounds like a fun project!
   And, SOBILL, thanks for the suggestion. Any suggestions on what needs
   to be done would be appreciated.
   Jeff
   6559

     2 Attached Images

   [2][getPart?uid=26026589&partId=3&saveAs=Relay+Locations-Early.
   jpg&scope=DWEB]

   [3][getPart?uid=26026589&partId=4&saveAs=Relays+Locations-Late.
   jpg&scope=DWEB]

References

   1. mailto:jjdetrich at gmail.com
   2. https://mail.aol.com/webmail/getPart?uid=26026589&partId=3&scope=DWEB&saveAs=Relay+Locations-Early.jpg
   3. https://mail.aol.com/webmail/getPart?uid=26026589&partId=4&scope=DWEB&saveAs=Relays+Locations-Late.jpg
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