[TR] Connecting red wire on Pertronix

[Joe Curry]

I'm sorry.  I forgot that I promised not to answer anything on this list
since you ALWAYS contradict me whenever I do.



-----Original Message-----
From: triumphs-bounces+spitlist=cox.net at autox.team.net
[mailto:triumphs-bounces+spitlist=cox.net at autox.team.net] On Behalf Of
Randall
Sent: Sunday, November 04, 2007 6:42 PM
To: triumphs at autox.team.net
Subject: Re: [TR] Connecting red wire on Pertronix

> It is easy to determine 
> by connecting a probe light or Volt meter to the oil pressure 
> switch (or any other point you want to test) and turn on the 
> ignition.  If the probe light illuminates or you get a 12 V. 
> reading on your meter, that should work.

There is a problem with that approach (which I suspect is exactly what John
has done).  The problem is that you don't know how much resistance is in
that circuit, and the Pertronix requires a low-resistance source of power.

In fact, the original coil wire will pass the above test.

So if you want to do it that way, use a relatively high power load (like an
old headlight bulb) to test the circuit, then check how much voltage you
get.  If you can get 12v with a headlight bulb lit from it, it's low enough
resistance to power the Pertronix.

Randall
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