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Re: 2500M Electrical Questions

To: "Pat Leask" <pleask@telus.net>
Subject: Re: 2500M Electrical Questions
From: robert blumberg <robert.blumberg@pictureiq.com>
Date: Wed, 19 Sep 2001 08:37:28 -0700
At 08:17 pm 09/18/01 -0700, Pat wrote:
>Many thanks, but where and what are the "TVR Tech Tips" found? 
 I bought it through the TVR car club.  It's not complete, but it's very, very 
useful.

>When you say the later TVR's hang off the coil, what year do you consider to
>be later ?  
I'm not sure perhaps someone on the TVR list can help out.  '74s are use the 
older circuit.

Rob't

>----- Original Message -----
>From: "robert blumberg" <robert.blumberg@pictureiq.com>
>To: "Pat Leask" <pleask@telus.net>
>Sent: Tuesday, September 18, 2001 6:19 PM
>Subject: Re: 2500M Electrical Questions
>
>
>> At 08:51 pm 09/17/01 -0700, Pat wrote:
>> >
>> >1. The coil has a "+" and a "-". The Neg goes to the ground, the "+" goes
>to
>> >the dist. That is all I have. Is there not a wire from somewhere that
>feeds
>> >the coil power ??
>> >
>> Check out the "TVR Tech Tips" for the tach and primary wiring diagram.
>According to it, on the earlier 2500M TVRs the primary circuit is:
>> V+ -> ignition switch -> tachometer -> ballast resistor -> coil+  ->
>coil- ->  points (in the distributor) -> ground -> V-.
>>
>> On the later TVRs the tack is not in series, but hangs off the coil-.
>>
>> On both there is a solenoid on the starter motor that cuts out the ballast
>during starting so that the coil sees a higher voltage while the starter
>motor is pulling down the voltage.
>>
>> > 3. Alternator. It is a "Wilson" and has two big fat brown wires that are
>> > bolted on. There is also two spades... one is a big thick brown with
>blue
>> > stripe that goes where ?
>>
>> Also in the book, there is a list of standard brit color codes (which
>probably don't apply to TVRs) that reads, "BrownBlue  -- Control box
>(compensated voltage control only) to ignition switch,"  and "Brown -- Main
>battery lead."  for What it is worth.

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