Hmm - how strange.
If I remember correctly, a Mk III should be -ve ground. If it used to
be +ve ground, the only reason I can think of is that when the 1148
engine was put in, all the +ve ground electrics were put in with it - I
suppose that might be an almost sensible thing to do?
As for the charging problem, you have to do more than just reverse the
battery. There are a couple of websites (none which I can remember off
the top of my head, though) which tell you exactly what you need to do
to convert from +ve to -ve. But it sounds to me like an alternator
problem. Maybe it wasn't converted to -ve ground correctly? Again, I
can't remember exactly what you have to do, but there are websites that
will describe it to you (unless someone on the list comes up with a
description). Failing that, check all the wiring. Good luck!
Dean
-------------------
>----------
>From: Zach[SMTP:z510z@yahoo.com]
>Sent: 24 June 1999 03:47
>To: 'spitfires@autox.team.net'
>Subject: Question of polarity.
>
>
>Okay, here is my weird quandry for the week:
>
>I've got my 70 mk III currently running negative
>ground. According to the books, this is how the
>machine is normally supposed to be set up. However,
>up to this year we'd been running positive ground on
>the car. Intelligently, we switched it over to
>negative right before we got it running for the year.
>Nowwe've been having problems keeping it charged. One
>of it's DPO's decided to put the 1148 engine in
>instead of the 1296, and apparently it's quite the
>early mk I engine.
>Logic tells me that I should reverse the battery back
>and everything should be fine, right? Tell me I'm
>not entirely crazy.
>
>Thanks a bunch,
>
>Zach Zaletel
>70 Spit Mk III
>http://freespeech.org/zach
>
>
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