[DeTomaso] One step forward, two steps back

[Christopher Kimball]

On my car, the horns were feeble and sometimes didn't work at all.  All I did was locate them behind the passenger-side front wheel, take them out, write-brush the metal horn bracket (which is the ground for the horns), wire -brush the contact point where the bracket bolts on to the body, wire-brush the bolt, put electrical-connection contact  gel on all of it, and put the horns back in.  They immediately worked perfectly from then on.

Chris.

Sent from my Windows Phone
________________________________
From: Jack DeRyke via DeTomaso<mailto:detomaso at poca.com>
Sent: ‎9/‎27/‎2015 2:46 PM
To: charlesmccall at gmail.com<mailto:charlesmccall at gmail.com>; detomaso at poca.com<mailto:detomaso at poca.com>
Subject: Re: [DeTomaso] One step forward, two steps back

Charlie, when my horns stopped working and I needed them for an upcoming conclurs where all factory stuff must work,  I  started tracing the wiring. It is a grounding circuit and I chased the horn ground clear back to the stalk where the button is.  I found that the stalk is hollow and the final ground is inside the stalk. There is a small lump under the black paint about halfway up the stalk where the wire is soldered by means of a drilled hole so a ground is established. I removed the paint from the lump and heated it up with a soldering iron while pushing on the wire inside the turn signal switch. When the solder reflowed, the wire once again became a ground & the button honked the horns. That was 30 yrs ago & they still work, Good luck.



Sunday,September 27, 2015 11:47 AMTo: detomaso at poca.comSubject: [DeTomaso]

One stepforward, two steps backHi allAfter my 6100km road trip from Spain toSweden this summer, my car fellapart on the way home.Both door lockswere damaged during a theft attempt (along with 5 otherPanteras) inCopenhagen.My radiator started leaking just about as fast as I couldpour water intothe tank (but we got home without overheating, so I won'tcomplain)AS mentioned here, I found that one of my rims developed aserious crack.And last but not least, my horns stopped working.I wasall excited yesterday because I had changed one of the locks in thedoor and itworks well, and as an added bonus I changed the bulbs in thedoor so that theynow come on when you open the door. I had forgotten aboutthem, to behonest!Today I set about doing what I thought would be an easy task -changing thehorns. I bought a new Hella airhorn a few weeks ago. The swapitself wasfairly straightforward - remove the stock Fiamm compressor and Iactuallydecided to leave the stock horn bodies and just use the newHellacompressor. Before putting the panel back in the car I checked to makesureeverything worked properly, and with 12v to the compressor it blowsquiteloud, especially when you are holding them in your hands.Iinstalled the panel in the car, turned the key on and hit the horn button.andwas greeted by silence.My horn relay is new. The compressor works, asdemonstrated during thepre-installation test. What would people suggest Icheck to determine whatthe problem is? It could be the turn signal stalk, butthose are expensiveand I'd rather not just throw money at the problem beforebeing able todetermine exactly where the problem is. What's thetroubleshooting procedurenow?Thanks.Signed, ratherdiscouraged. Only 9 months until Le Mans Classic and at thisrate I'mwalking.._______________________________________________

 DetomasoForum Managed by POCAPosted emails must not exceed 1.5 MegabytesDeTomasomailinglistDeTomaso at poca.comhttp://poca.com/mailman/listinfo/detomaso_poca.comTomanage your subscription (change email address, unsubscribe, etc.) use the linksabove._______________________________________________Detomaso ForumManaged by POCAPosted emails must not exceed 1.5 MegabytesDeTomaso mailinglistDeTomaso at poca.comhttp://poca.com/mailman/listinfo/detomaso_poca.comTomanage your subscription (change email address, unsubscribe, etc.) use the linksabove.


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   On my car, the horns were feeble and sometimes didn't work at all.  All
   I did was locate them behind the passenger-side front wheel, take them
   out, write-brush the metal horn bracket (which is the ground for the
   horns), wire -brush the contact point where the bracket bolts on to the
   body, wire-brush the bolt, put electrical-connection contact  gel on
   all of it, and put the horns back in.  They immediately worked
   perfectly from then on.
   Chris.
   Sent from my Windows Phone
     __________________________________________________________________

   From: [1]Jack DeRyke via DeTomaso
   Sent: 9/27/2015 2:46 PM
   To: [2]charlesmccall at gmail.com; [3]detomaso at poca.com
   Subject: Re: [DeTomaso] One step forward, two steps back

   Charlie, when my horns stopped working and I needed them for an
   upcoming conclurs where all factory stuff must work,  I  started
   tracing the wiring. It is a grounding circuit and I chased the horn
   ground clear back to the stalk where the button is.  I found that the
   stalk is hollow and the final ground is inside the stalk. There is a
   small lump under the black paint about halfway up the stalk where the
   wire is soldered by means of a drilled hole so a ground is established.
   I removed the paint from the lump and heated it up with a soldering
   iron while pushing on the wire inside the turn signal switch. When the
   solder reflowed, the wire once again became a ground & the button
   honked the horns. That was 30 yrs ago & they still work, Good luck.
   Sunday,September 27, 2015 11:47 AMTo: detomaso at poca.comSubject:
   [DeTomaso]
   One stepforward, two steps backHi allAfter my 6100km road trip from
   Spain toSweden this summer, my car fellapart on the way home.Both door
   lockswere damaged during a theft attempt (along with 5 otherPanteras)
   inCopenhagen.My radiator started leaking just about as fast as I
   couldpour water intothe tank (but we got home without overheating, so I
   won'tcomplain)AS mentioned here, I found that one of my rims developed
   aserious crack.And last but not least, my horns stopped working.I
   wasall excited yesterday because I had changed one of the locks in
   thedoor and itworks well, and as an added bonus I changed the bulbs in
   thedoor so that theynow come on when you open the door. I had forgotten
   aboutthem, to behonest!Today I set about doing what I thought would be
   an easy task -changing thehorns. I bought a new Hella airhorn a few
   weeks ago. The swapitself wasfairly straightforward - remove the stock
   Fiamm compressor and Iactuallydecided to leave the stock horn bodies
   and just use the newHellacompressor. Before putting the panel back in
   the car I checked to makesureeverything worked properly, and with 12v
   to the compressor it blowsquiteloud, especially when you are holding
   them in your hands.Iinstalled the panel in the car, turned the key on
   and hit the horn button.andwas greeted by silence.My horn relay is new.
   The compressor works, asdemonstrated during thepre-installation test.
   What would people suggest Icheck to determine whatthe problem is? It
   could be the turn signal stalk, butthose are expensiveand I'd rather
   not just throw money at the problem beforebeing able todetermine
   exactly where the problem is. What's thetroubleshooting
   procedurenow?Thanks.Signed, ratherdiscouraged. Only 9 months until Le
   Mans Classic and at thisrate
   I'mwalking.._______________________________________________
    DetomasoForum Managed by POCAPosted emails must not exceed 1.5
   MegabytesDeTomasomailinglistDeTomaso at poca.comhttp://poca.com/mailman/li
   stinfo/detomaso_poca.comTomanage your subscription (change email
   address, unsubscribe, etc.) use the
   linksabove._______________________________________________Detomaso
   ForumManaged by POCAPosted emails must not exceed 1.5 MegabytesDeTomaso
   mailinglistDeTomaso at poca.comhttp://poca.com/mailman/listinfo/detomaso_p
   oca.comTomanage your subscription (change email address, unsubscribe,
   etc.) use the linksabove.

References

   1. mailto:detomaso at poca.com
   2. mailto:charlesmccall at gmail.com
   3. mailto:detomaso at poca.com
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