Date: Wed, 24 Sep 1997 03:50:21 -0600 (MDT)
From: (fordtrucks61-79-digest)
Subject: fordtrucks61-79-digest V1 #238

fordtrucks61-79-digest Wednesday, September 24 1997 Volume 01 : Number 238

Ford Truck Enthusiasts - 1961-1979 Trucks Digest
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In this issue:

RE: 76 Ammeter [DC Beatty ]
CSU Emmisions Site ["Dale and Donna Carmine" ]
76 Ammeter ["Dale and Donna Carmine" ]
Show us the PO BOX []
Re: Show us the PO BOX ["deconblu" ]



Date: Tue, 23 Sep 1997 22:50:46 -0400
From: DC Beatty
Subject: RE: 76 Ammeter

I sent this on the new list to see if it works. Thanks for all your hard
work Ken. You are the master!!!

Mine doesn't work either. Could this be the same on the '67??

Thanks, =

DC Beatty
1967 F100 352
1974 Maverick 302

You wrote:

there is an error in the circuit design from Ford. The meter is of a
shunt type design. The current goes through the meter (no loop on the
back of the meter). Ford probably did not want to have to rout all of
the current through the meter on the dash (good idea, prevents shock
hazard, electrical fires and if meter dies so does the charging circuit)
so they put a large shunt across the leads to the meter. This would
work if the shunt has a little resistance in it. Mine was pure copper
wire and the reason the meter did not work is that there was not enough
resistance in the shunt to deflect some current through the meter.>>


Date: Tue, 23 Sep 1997 22:25:06 -0500
From: "Dale and Donna Carmine"
Subject: CSU Emmisions Site

Dave R,
Thanks for the link. Interesting stuff. But what are we supposed to do if
we don't have

> an IM240 lane, two RG240 dynos, and three portable 5-gas analyzers

in our garage?

The thing that struck me was that guessing, even if it was educated,
doesn't get the results. You have to be able to test, and that takes
specialized equipment. :-(
I did learn something though and that is that I know even less than I
thought about how this stuff works!

dale c


Date: Tue, 23 Sep 1997 22:38:04 -0500
From: "Dale and Donna Carmine"
Subject: 76 Ammeter

>The funny thing is that if you think about it, every 73 to 79 truck has
>a brand new ammeter in it because the way it's hooked up IT HAS NEVER
>BEEN USED! OH OH OOOOOOOOOOHH!!!! (Sam Kinnesen yell).


It is almost unbelievable that Ford did this but I believe it because we
have three trucks, '76 F-350, '78 F-250, and my '79 F-150 and the ammeter
never moves on any of them!!!!

I've wondered about this in the past but never dug into what was going on,

>I'm going to watch the system closely for a while to make sure
>the harness is not getting too hot

VERY IMPORTANT! I would run all electrical accessories, headlights, etc.
on, engine off, for about 15 minutes and see if the shunt heats up. Would
be better than an electrical fire.

dale c


Date: Tue, 23 Sep 1997 22:29:07 -0700
Subject: Show us the PO BOX

A PO box for donations would be great!
Now, not only can we put in our 2 cents worth, but maybe a few bucks

By the way how did you determin who would be on which list after the
split. I seem to be on the right one (61-79) thanks!



Date: Wed, 24 Sep 1997 01:25:48 -0700
From: "deconblu"
Subject: Re: Show us the PO BOX

If you wanted to change you e-mailed Ken. If you didn't want to change you
did nothing. Guess you did the right thing

Deacon Blues
Visit my Homepage at
or send me a fan or flame at not both. Never fan a flame!


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Ford Truck Enthusiasts 1961-1979
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