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Re: [Healeys] Electrical Overdrive Enigma

To: MGTD51 <mgtd51@comcast.net>, "healeys@autox.team.net"
Subject: Re: [Healeys] Electrical Overdrive Enigma
From: "Alan Seigrist" <healey.nut@gmail.com>
Date: Sat, 21 Jun 2008 06:32:38 +0200
Larry -

Sounds to me like you haven't adjusted the throw of the solenoid
plunger properly - it's probably pushing down too far, blowing the
fuse every time it is activated.

Alan



On 6/21/08, MGTD51 <mgtd51@comcast.net> wrote:
> The overdrive on my 1959 BT7 is driving me nuts.  Most of the components
> are new: wiring harness, overdrive relay, throttle switch. solenoid.
> Only the gear box switch is original.  I have installed a 10 amp British
> fuse in the white wire running from terminal A3 on the fuse box to the
> C1 terminal on the relay.  The overdrive works fine (solenoid clicks in
> when in 3rd or 4th gear).  But when I connect the throttle switch and
> flip on the overdrive dash board switch, I either blow the fuse, or
> nothing happens.  I have connected an ohmmeter between the case of the
> throttle switch and each of the terminals; there is no short.  Also, the
> wiring harness seems to be ok.
>
> Needless to say, I am driving the car without the throttle switch connected.
>
> Any ideas.  Thanks in advance.
>
> Larry Swift
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Alan

'52 A90
'53 BN1
'64 BJ8
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