Yep, that is the consensus also from other who have also reversed polarity.
Having done electronic design for the past 30 years, including using Hall
effect switches, I am surprised that they use no internal polarity
protection. It is a simple thing to do, merely requires a simple 5 cent
transistor since the coil current is low.
But like you say....now I have learned the lesson!! Now I know why all the
MG pros carry the spare points in the toolbox!!
Kind regards,
Tim
+++++++++ contact info ++++++++
Tim Economu
Senior Design Engineer
Offgrid Engineering LLC
4131 Springwater Rd.
Clinton, WA 98236 USA
phone: 360-579-2117
economu@whidbey.com
http://www.offgridengineering.com
+++++++++++++++++++++++++++
----- Original Message -----
From: "Barney Gaylord" <barneymg@ntsource.com>
To: "Tim Economu" <economu@whidbey.com>; "MG List" <mgs@autox.team.net>
Sent: Wednesday, September 11, 2002 11:21 AM
Subject: Re: Pertronix install.....zap
> At 11:32 PM 9/10/02 -0700, Tim Economu wrote:
> >.... installing the Ignitor in my 25D distributor, and .... After
> >determining there was no voltage getting to the coil, .... I found I had
> >reversed the coil wires. After correcting the reversed wires, I cannot
get
> >the Ignitor to switch, ....
> >
> >So my obvious question is, did I fry the unit, or ....
>
> Yeah, it's fried. They don't seem to hold up well to reverse polarity. I
> was recently called to the aid of an ailing MGA that had a new battery
> momentarily installed backwards. After correcting the battery polarity
the
> Pertronics unit was a dead short to ground and proceeded to smoke the
> ignition supply wires when the key was switched on.
>
> Some of our best lessons in life are learned the hard way.
>
> Barney Gaylord
> 1958 MGA with an attitude
> http://www.ntcource.com/~barneymg
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