Check to make sure that the body is well grounded. There is often a bonding
strap that connects the engine block to the body. Those straps often
disintegrate with age. Also, look for voltage drops along the insulated
circuit that feeds all of the accessories. With heater fan on, lights on,
and anything else that can be turned on, there should be no more than about
0.2 volts drop from the insulated battery post to each of the accessory
items.
Alex Thomson
-----Original Message-----
From: triumphs-bounces@autox.team.net
[mailto:triumphs-bounces@autox.team.net] On Behalf Of Roger Elliott
Sent: Tuesday, September 04, 2012 8:07 PM
To: triumphs@autox.team.net
Subject: [TR] charging sytem
Hi All,
About a week ago I replaced my battery that was about 7 years old - I
figured it had served long enough. It was an inexpensive battery to start
with.
I replaced it in part because my voltmeter was reading low and the tach and
overdrive would quit working at times. In the back of my mind I new it
probably was more than the battery even though it happened mainly at lower
speeds.
Well the voltmeter is still reading between 12 and 13 (both gauge and VOM).
So I put a new alternator on it. Well, it is still reading about
12 volts.
I did clean the battery terminals.
Any suggestions on what I should look at next?
Thanks
Roger Elliott
1980 Spitfire
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