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RE: Wiring my TR3A

Subject: RE: Wiring my TR3A
From: "Randall Young" <ryoung@navcomtech.com>
Date: Sun, 11 Aug 2002 11:44:17 -0700
Cc: <triumphs@autox.team.net>
> Removed ground from ignition lamp and moved it to the fuel gauge.
>  Now fuel
> gauge works better but ignition lamp doesn't work at all.  Kind
> of miss that
> green light.

David, the ignition lamp should be red.  The green one is the turn signal
indicator (and it is supposed to be grounded).

> >Then behind the dash, do the same test from the headlight switch
> to ground.
> >With the switch pulled out to the second position (headlights on), you
> >should find power on all three terminals.  If you find power on no
> >terminals, the wire to A1 is broken/disconnected.  If you find power on
> >only
> >one or two terminals, the switch is bad.
>
> Shot craps here.  Only got a light on one terminal.  Guess I'll
> order a new
> switch.  Probably only switch for which I have no spare.

It's up to you of course, but now might be a good time to consider adding a
fuse to the headlight circuit.  Those switches can get expen$ive, especially
if you have an intermittent short as I did for several years.

> BTW:  My ammeter always (when ignition is on) is pegged at the +
> side.

That definitely is not normal.  My guess would be that your ammeter is wired
backwards to the battery polarity you're running, and that there is a short
somewhere in the ignition circuit.

> I do
> have a monster battery in the car (biggest that would fit in the
> batt box),
> but this seems weird.  No matter how I drive, same thing.  Should
> this gauge
> be grounded?

No, the ammeter does not need to be grounded.  Only the fuel gage (on a
TR2/3) does.

>  Also, my speedo needle looks like the stem on a
> metronome.  I
> have two cables - one very long (not using it because it is for the
> overdrive that I did not reinstall) and the one that I am using
> that screws
> into the trans.

Could be a bad cable, IMO it's more likely a bad speedo head.  One way to
test is to switch the cables between the tach and speedo.

> PS:  You know that pair of brackets that I was telling you about
> behind the
> dash and connected to the back of the brake and clutch master cylinders?
> Well, it DOES hold a 10" Mag-Lite very well.  Going to use it that way,
> too;-)

I like that idea !  I may have to do that myself.

Randall

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