The only instrument that I know of that would need to change is the ammeter.
The fuel gauge will run in either polarity and the rest of the gauges are
not electrical.
Another reason for converting to negative ground would be so that you could
use an alternator in place of the wimpy TR3 generator.
George Richardson
'57 TR3, TS15559L
(getting ready to paint - and now on the web!)
http://www.merlingroupinc.com/tr3.htm
-----Original Message-----
From: Don J. Howard <dhoward@jht.com>
To: triumphs@autox.team.net <triumphs@autox.team.net>
Date: Friday, December 19, 1997 11:10 AM
Subject: Re: Jump Starting TR3
>If you install your battery with negative ground you will have to rewire
>most of your instruments first. There is nothing wrong with positive
>ground. When jump is needed match battery posts + to +, and - to -
>using both jumper cables. Never use the Government bumper to bumper
>recommendation. These people have no insight into how things work, they
>have decided that the remote possibility of a hydrogen gas explosion is
>more dangerous than what might happen using their "safe" method. The
>auto battery has enough amperage to make a pretty decent arc welder.
>What can happen other than the obvious mis wiring in your example with
>different grounds, is that direct current always follows the path of
>least resistance, so it just might make the connection to the battery
>through a brake line or a fuel line, an arc here can put a hole in a
>very dangerous place, or start a fire.
>
>Cheers, and Merry Christmas, Don J. Howard
>
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