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Classics Monthly - - Contents - John New­ton Wey­mouth Thanks John, good ad­vice. We’ve used a por­ta­ble volt­meter our­selves, which cost just a few pounds and plugs into the lighter socket to do the same thing.

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VOLT­AGE DROP

read with in­ter­est the diary piece in the Fe­bru­ary is­sue about Will Arm­ston-Sheret’s Mi­nor charg­ing sys­tem prob­lems. I’ve suf­fered a sim­i­lar is­sue my­self with fail­ing al­ter­na­tor in a car with no charge warn­ing light to let me know it was pack­ing up... the first I knew was when I turned on the lights and the en­gine cut out!

Rather than go to the trou­ble of pas­ing all the car’s charg­ing cur­rent through an am­me­ter though, why not use a volt­meter which is much eas­ier to wire in? It doesn’t give you quite the same in­for­ma­tion I know, but if the read­ing drops be­low 13(ish) volts with the en­gine run­ning then you know there’s a prob­lem some­where – hope­fully giv­ing you time to get home or at least pull over safely!

Clas­sics Monthly PO Box 978 Peter­bor Cambs ough PE1 9FL

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