Classic cars forum & vehicle restoration.
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L5Foye
Joined: 26 Sep 2014 Posts: 30 Location: Laurelvale, Portadown N. Ireland
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Posted: Wed Jun 06, 2018 2:19 pm Post subject: Ammeter-Austin 10 Cambridge |
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After installing a new battery, I notice the ammeter is showing a slight + even though everything is switched off. What could be wrong? The car has been the subject of a long restoration. |
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47Jag
Joined: 26 Jun 2008 Posts: 1480 Location: Bothwell, Scotland
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Posted: Wed Jun 06, 2018 11:03 pm Post subject: |
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Disconnect the battery and observe the needle. Has it moved back to zero? Yes? you have a current draw and may have to disconnect bits until needle shows zero. If No, the ammeter pointer could simply be bent. Repair, replace or ignore.
Art |
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Penman
Joined: 23 Nov 2007 Posts: 4755 Location: Swindon, Wilts.
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Posted: Thu Jun 07, 2018 9:15 am Post subject: |
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Hi
Surely a +reading is showing a charge, not a discharge!
So if you find that there is a current leakage by following 47jag's method then it also looks as if it has been connected wrong way round.
As well as the bent needle suggestion, I wonderf if the backplate, with the markings on it, could have been installed off centre. _________________ Bristols should always come in pairs.
Any 2 from:-
Straight 6
V8 V10 |
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L5Foye
Joined: 26 Sep 2014 Posts: 30 Location: Laurelvale, Portadown N. Ireland
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Posted: Thu Jun 07, 2018 6:00 pm Post subject: |
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Many thanks for the replies.
I disconnected the battery and ammeter went to zero. Better still, when I reconnected the battery, it stayed at zero. Fingers crossed, it was a minor blip-I was dreading removing the dash again. |
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