This sounds very hard to do to me because of the way
the switch on the top extension works. The way this
switch works is that a metal spade from the stick
shift extension contacts the switch when it is moved
over to the 3rd/4th gear side, far right. This means
the car does not know if the trans is in 3rd or 4th.
All it knows is that the circut is complete and
therefore overdrive can be selected.
Mark Holbrook
--- "Michael D. Nugent, Ph.D." <nugentmd@gte.net>
wrote:
> Would it be possible to arrange for the OD to only
> engage in 4th?
> (D-type, I think, from a '73 GT6)
>
> Mike
> Renton, WA
>
> mark holbrook wrote:
>
> > Yes thats right. I have a D-type overdrive on my
> GT6.
> > With regards to the wiring of the overdrive, you
> have
> > a couple of circuts. First off is I bought a TR6
> > overdrive steering column switch (wire harness)
> and
> > relay for the GT6 and it works great. The
> steering
> > column switch then goes to the relay which I
> mounted
> > somewhere under the dash and then the harness
> breaks
> > in 2 paths. One path goes to the solenoid on the
> > overdrive and the other goes on the switch on the
> > trans extension to allow the overdrive ot engage
> only
> > when the shifter is in 3rd or 4th gear. I
> strongly
> > recomend this switch. Trust me, I do forget to
> switch
> > out of overdrive sometimes and I think we all know
> > what terrible damage will occur if the overdrive
> is
> > engaged when reverse is selected. Also I thought
> of
> > wiring up the overdrive to get it on 2nd 3rd and
> 4th
> > gear like my brothers TR6, but don't. The clutch
> in
> > the overdrive will not handle the 2nd gear power
> for
> > too long.
> > Mark
> > 1969 GT6 convertable (Spitsix)
> > --- Dean Dashwood <Dean.Dashwood@enron.com> wrote:
> > >
> > >
> > >
> > > Didn't notice a reply to this, so I'll post one:
> > >
> > > J-type overdrives weren't fitted with a relay as
> > > standard, although I believe
> > > it's ok to fit one if you want (for additional
> > > protection). D-type overdrives,
> > > AFAIK, did have a relay fitted.
> > >
> > > Dean
> > > -----------
> > >
> > > (Jeff, is it just me, or am I answering almost
> every
> > > question you ask? Seems
> > > like the questions your asking fit right into my
> > > limited knowledge - can't
> > > remember ever posting this many replies before!)
> > >
> > >
> > >
> > > Date: Mon, 5 Jun 2000 20:44:44 -0700
> > > From: "Jeff McNeal" <jmcneal@ohms.com>
> > > Subject: O/D switch momentary or two pole?
> > >
> > > Just curious. Does the overdrive switch hit a
> relay
> > > of some sort or does
> > > the O/D circuit need a contsant 12v to engage
> and
> > > hold the O/D on?
> > >
> > > Thanks!
> > >
> > > Jeff
> > >
> > >
> >
> > =====
> > -Mark Holbrook-
> >
> > __________________________________________________
> > Yahoo! Photos -- now, 100 FREE prints!
> > http://photos.yahoo.com
>
> --
> Mike
> Renton, WA
> >>--------------> 914 Lite 2.5 is FOR SALE:
> http://home1.gte.net/NugentMD/914lite.htm
>
>
=====
-Mark Holbrook-
__________________________________________________
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