Most likely your tach is receiving a pulse from both systems. Some where
the two systems are interconnected. Chase out your wiring to find the point
that connects both systems to the Tach and separate them. As others have
mentioned this can easily be done with a DPDT switch and can also be done
with a small SPDT relay wired to switch when you change to the backup
system.
----- Original Message -----
From: "Serge VIDAL" <serge.vi...@sagem.com>
To: "KRnet" <kr...@mylist.net>
Sent: Tuesday, October 10, 2006 8:00 PM
Subject: Réf. : Re: KR> Tach hook up question.
I have a problem too. When I switch the second ignition, the tacho goes
crazy. It gives nearly a double reading, with a shaky needle. Although it
is wired to only one coil.
The funny thing is that it worked well before, when I had a partial dual
ignition (two sets of ignition magnetic pick-ups (timing devices), but
only one set of coils and spark plugs. Now that I have a full dual, I
cannot read properly when both ignitions are active.
Any advice on that?
Serge Vidal
KR2 "Kilimanjaro Cloud"
Canberra, Australia
j35...@aol.com
Envoyé par : krnet-bounces+serge.vidal=sagem....@mylist.net
10/10/2006 17:29
Veuillez répondre à KRnet
Remis le : 10/10/2006 17:30
Pour : kr...@mylist.net
cc : (ccc : Serge VIDAL/DNSA/SAGEM)
Objet : Re: KR> Tach hook up question.
Mark:
Do not put a jumper between them as it will short the two ignitions
together. The safest way is to switch the tach wire when you switch the
ignition.
That requires a separate deck on the switch but is the safest and most
reliable.
Bob Lasecki
Chicago
_______________________________________
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html
" Ce courriel et les documents qui y sont attaches peuvent contenir des
informations confidentielles. Si vous n'etes pas le destinataire escompte,
merci d'en informer l'expediteur immediatement et de detruire ce courriel
ainsi que tous les documents attaches de votre systeme informatique. Toute
divulgation, distribution ou copie du present courriel et des documents
attaches sans autorisation prealable de son emetteur est interdite."
" This e-mail and any attached documents may contain confidential or
proprietary information. If you are not the intended recipient, please
advise the sender immediately and delete this e-mail and all attached
documents from your computer system. Any unauthorised disclosure,
distribution or copying hereof is prohibited."
_______________________________________
Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
please see other KRnet info at http://www.krnet.org/info.html
