As stated, this switch is not essential. I have used air conditioning
cut out kits to duplicate the function. Low vacuum, the switch opens
and cuts power to the A/C (overdrive). The cut out kits are available
from most American parts stores. We did once install one inside the
original switch assy. for a concours car.
Kelvin.
Thomas_Mitchell@notes.amdahl.com wrote:
>
> HI, I have a 1966 MGB-GT and I have overdrive type D and transmission
> coming to my house and I am
> researching what it will take to install them.
> I cannot find the vacuum switch and have been told that they only used in
> on the early overdrives and then got rid of it.
> I have been told that I really don't need it, can I get another source on
> if this is indead true? I hate to go through all
> this expense and mess up my new overdrive. Can anyone help?
>
> Tom MItchell
> 1966 MGB-GT
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