Wilsons Sandbox

I agree with Badger and Dave There should be no problem with reversing the polarity of the electrical system. The only reason for doing this would be to install modern electronic equipment that requires a negative earth, or a modern dynamo with a solid state rectifier. There were no transistors when our cars were built. There may be some theoretical advantage to having a negative earth system in reducing corrosion (Cathodic Protection) but in practice this effect would be negligible, especially if the car is kept in a dry garage. I am keeping my TC to its original Positive earth electrical system. Jim Chase TC This is all correct. mg-tabc@yahoogroups.com The leads to the coil should also be reversed but what would be the reason or advantage??? A positive thinking Badger Dwyer wrote:

> > Stan > > Which way round the field windings are connected to the armature

determines

> the direction of rotation of the starter, so polarity won't alter its > behavior. This problem only occurs in small motors using permanent magnets > for the field. > > The reversed battery will repolarise the dynamo field instantly, so no > problem there either. > > The fuel pump will only be affected if it has been transistorised. > > The ammeter will read backwards, but this can be corrected by swapping the > connections. > > In short there is no problem to reversing polarity as long as the car > contains ##no electronics##. > > This isn't just my theory. Someone fitted the battery in positive-earth

mode

> into our J2 a few years ago: it made not the slightest difference (except

to

> the ammeter). > > If it suits you do it. > > Regards > > Dave Dwyer > J2, TA, TC > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

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