[DeTomaso] Tach Issue ...

[boyd casey]

MSD also makes two different models of tach adapter the 8910 and tthe 8920.
It may be with your unorthodox elctrical system you need the other MSD Tach
adapter
. The MSD web site has a good tech support section ,I would check there for
some help.
Boyd
On Fri, Apr 16, 2010 at 11:34 PM, Erik Anderson <
eanderson at geotracinternational.com> wrote:

> Chuck,
>
> Unless something miraculous happens over night, I am going to return the
> tach adapter tomorrow.
>
> I like your line of thinking.
>
> Thanks,
> EA
>
>
>
> ----- Original Message -----
> From:  Charles Engles <cengles at cox.net>
> To: Erik Anderson
> Cc: detomaso at realbig.com <detomaso at realbig.com>
> Sent: Fri Apr 16 21:27:31 2010
> Subject: RE: [DeTomaso] Tach Issue ...
>
> Dear Erik,
>
>
>            It might be possible that you have a bad 8920 tach adapter.  I
> once bought a new MSD 6AL from Summit and it was bad right out of the
> box.......It is a remedial suggestion, but I am very remedial with
> electric/electronics.
>
>
>                  I hate electrical gremlins,  Chuck Engles
>
>
>
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> On
> Behalf Of Erik Anderson
> Sent: Friday, April 16, 2010 10:21 PM
> To: De Tomaso List
> Subject: [DeTomaso] Tach Issue ...
>
> Good evening, folks.
>
> A few weeks ago, I installed a new alternator - the Delco si12 model.
> Because this alternator has an integrated voltage regulator, the wiring
> from
> the alternator to my MSD ignition is a little different.  Working closely
> with Jon Haas from Pantera Electronics (what a great guy), I think we have
> the wiring figured out ... but the weird thing in all of this is that,
> although my cat starts and runs as strong as ever, the tach does not
> register a single RPM.
>
> It should be noted that I have a new tach adapter (model 8920) and a new
> MSD
> SS blaster.  The wiring for those components were very easy and, with a
> little (ok, a lot!) of assistance from Jon, I think we have the MSD-to-tach
> wiring correct as well.  But the tach still won't work.
>
> I have tried almost everything to get it to work: tried a second tach,
> rewired the trigger wire from the tach adapter to the tach, re-wired the
> grounds, checked power to the tach ... nothing has worked.
>
> So, I ask ... has anyone experienced this before?  Any suggestions?
>
> Fire away, folks ... and, thanks in advance for any ideas you have for me.
>
> Cheers,
>
> EA #3528
>
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