Positive earth minor

[addsosad]

Hello guys and gals, as per the title I'm asking for a bit of advice on my '56 minor. It's currently running positive earth and I'm finding the Dynamo proper frustrating at night times. I'm looking at getting an alternator kit. I've asked a few people about fitting, few say I still need to change polarity by zapping the Dynamo and swapping wires around, whilst others say I just need to swap wires? Can anyone help??

[Trickydicky]

Here is the guide to changing it over but if you are just replacing the Dynamo with an Alternator you should only need to swop the battery terminals around and the coil connections.
http://www.mmoc.org.uk/index.php?page=322

[bmcecosse]

But your dynamo should easily handle a standard car electrics.....is the drive belt tight enough ?

[addsosad]

I'm not the best mechanic so it could be... should it be tight or maybe a little slack?

[bmcecosse]

Tight - but not 'bow' tight. It also may be 'ancient' - I would try a nice new belt.

[addsosad]

the Dynamo problem turned out to be dirt between the contacts? Didn't think it would cause charging issues... Thanks for your help guys, will let you know how the alternator turns out!

[bmcecosse]

Be sure to change the polarity of the car to -ve earth before attempting to fit an alternator......

[addsosad]

Is that just a case of turning the battery around and changing the coil wires?

[bmcecosse]

And cleaning/resetting the points in dizzy and fuel pump - and reversing the wires on the fuel gauge if an early car........