I'll go one further than john and say I guarantee it is negative ground. By
1973 the British car industry (i.e. BL) had long given up on positive ground
system.
-----Original Message-----
From: John T. Blair [mailto:jblair@exis.net]
Sent: Wednesday, October 17, 2001 11:09 AM
To: british-cars@autox.team.net
Subject: Re: positive ground/negative ground
>OK, dumb question time, is a stock 73 TR6 a positive or a negative ground?
>
> The reason I ask is I recently installed one of those battery isolation
>cut-out switches which specifically required a negative ground system.
Michael,
I'll almost garentee that it is a negative ground system.
However, to prove it to yourself, start at the battery.
Follow the cable from the positive terminal - it should go to
the starter solenoid. The cable from the negative terminal
of the battery should go to the eng. block.
If it is opposite of above, then you have a positive ground
car.
John
John T. Blair WA4OHZ email: jblair@exis.net
Va. Beach, Va Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V
75 Bricklin SV1 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
Bricklin: www.bricklin.org
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