[TR] TR3 Electrical question

[Carl TR]

Thanks Randall...

I found a great catalog that explained the connections.  You are correct in 
your description.
http://www.lucaselectrical.co.uk/catalogues/XCB634_switchgear_prodas.pdf

It connects to the LT side of the coil... in this case the + side. 
Interestingly, the coil has the + side furthest from the distributer.  I 
guess I could turn it around in the bracket but then 'LUCAS' would be upside 
down... :O)

C


----- Original Message ----- 
From: "Randall" <TR3driver at ca.rr.com>
To: <triumphs at autox.team.net>
Sent: Saturday, September 25, 2010 7:14 PM
Subject: Re: [TR] TR3 Electrical question


>> In addition to the battery / ground connections there is a
>> connection for a
>> wire that is supposed to go to the coil.
>
> I'm not absolutely certain, Carl, but I believe the switch has to go in 
> the
> ground lead from the battery.  The "small third terminal" gets wired to 
> the
> point side of the coil, and effectively shorts out the points (grounds the
> point side of the coil) when the switch is in the 'off' position.
>
> Some quick checks with an ohmmeter or powered test light should confirm
> this.  If I am right, the third terminal will not show continuity to
> anything with the switch "on"; but will be connected to the 'E' terminal
> when the switch is "off".
>
> Randall
>
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