[ROVERNET - UK] P5 Changing Polarity

Eric Russell p6rovers at yahoo.com
Mon Aug 13 18:05:51 BST 2007

Hi,  our friend who just bought that P5 already
mentioned has a question about changing polarity.  Can
anyone help?

Hi Eric:

I have another question for the Rovernet.

My P5 is a positive-ground car.   I would like to
convert it to negative-ground.  Is there a proper
procedure for this?  The fuel pumps have already been
fried by someone (prior owner) connecting the battery
the other way around, so they need to be rebuilt with
negative ground “Chicklets”.  The coil and ammeter
wires are easily switched.  However,  if I remember
correctly there is a procedure for re-polarizing the

Someone has installed an electronic ignition but I
don’t see any brand name on the black box that was
installed on the firewall.  Do they make these things
for positive ground or maybe it does not make any


William J. Goggin PE

Webmaster of The Rover Car Club of Canada
Website:  http://www.roverclub.ca/
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