Robin,
I am sure you will get some better advice from those that have switched
(like Theo), but the "paper-clip" magnet should have a fine white
insulated wire around it that causes the meter to read.
Wiring for the Mk I, Mk IA is shown in the TigersUnited.com web site
"Work Shop Manual", at:
http://www.tigersunited.com/resources/wsm/tt-images/MKIABIGwiring.jpg
as an option.
The alternator equipped Mk II is at:
http://www.tigersunited.com/resources/wsm/tt-images/MKIIBIGwiring.jpg
but it does not show any ammeter wiring for this alternator equipped model.
Again, thanks to Bill Gegg, for the color diagrams.
Steve
___
Steve Laifman
Editor - TigersUnited.com
<http://www.TigersUnited.com>
Robin Young wrote:
> I recently changed form generator to alternator on my Mk 1. The amp meter
> quit working about the same time and collective wisdom concluded that the
> amp meter burned up from the higher current. I pulled it out today and
> thought I would take a look inside.....nothing is burned and there was no
> diode or anything else other than an electro magnet about the shape of a
> paper clip. Apparently the magnet is charged by the direction of current
> from either the battery or alternator and swings the needle depending on
> current. It seems that more current from the alternator would pin the
> needle positive but a failed alternator would just give a typical discharge
> of amps from the battery. Both of the eight gage wire ends sparked to
> ground (forgot to disconnect the battery). Do I really need to have the
> meter worked on or is there some other place I need to investigate?
> ........think I will repaint the needle while I wait. Robin Young
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