[svxistentialist]

Thanks Lee

That is a useful chart. The point is well made in theory, and your observation about corrosion induced resistance is one that the factory engineers do not always allow for.

In past times here, it was common practice for all Fiat owners, and sometimes Renault owners, to put in the next biggest battery size for this very reason.

I would expect the biggest advantage of the heavy wire mod would be in starting, at highest current draw. This would be a most useful benefit for those in cold climes without a pre-heater.

My point about the possible 2-3 volts referred to things like the lights, when aircon fans and stereo and other draws reduced the voltage of the total system below optimum.

Will change the wire to see if it improves things. However, she starts with the turn of a key [original '91 Japanese battery] and I would much prefer to put in glass headlights and go to 100w hi-output bulbs to improve the lights. Not with the silly plastic, however.

Joe