As has been said before. You don't need any additional switches or relays
if you have the O/D installed as it was in the factory, i.e. with the
lockout switch fitted to the gearbox to ensure that O/D can only be engaged
in 3rd and 4th.
PaulH.
-----Original Message-----
From: Dave Houser <mgs4dave@warwick.net>
To: David Ambrose <stargazer1@home.com>
Cc: MSAWDEY@aol.com <MSAWDEY@aol.com>; mgrick@ptd.net <mgrick@ptd.net>;
mgs@autox.team.net <mgs@autox.team.net>
Date: 23 December 1998 00:47
Subject: Re: non od and OD trannys
>Good thought.
>However no backup lights on a 67 BGT.
>
>
>You should be able to use a relay on the backup light circuit to lock
>out the OD. It should be easy to figure out where it should hooked in.
>
>Regards,
>Dave Ambrose
>
>
>MSAWDEY@aol.com wrote:
>
>> An idea from the technological attic: years ago, I worked on a 1951
Plymouth
>> with overdrive, in the process of which I discovered that the clever
Yanks had
>> built in a solution to the destruction-through-reverse problem. The
backup
>> light switch had two sets of contacts: one normally open (for the backup
>> lights--closes when you put the trans in reverse), one normally closed
(for
>> the overdrive--opens when you put it in reverse). The switch itself
screwed
>> into the transmission and was activated by one of the rails inside, so it
>> probably wouldn't be adaptable to anything else, but the idea might be.
A
>> normally-closed microswitch in the right place ought to do the trick....
>
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