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I can't really see that, even if you had installed a 'modern' computer =
in your V8. Radios with a memory will put a drain on the battery, but =
it shouldn't be a problem after just 'a few days'. Even modern cars =
shouldn't do that for two or three weeks at worst. I had to put a =
cut-off switch in my V8 as the alarm was draining the battery in couple =
of weeks, since when it has been fine. The radio in that keeps its =
stations, and I've run a bypass feed direct to the clock. I also had to =
put one on my 'modern' as it's hardly used in summer and wouldn't start =
the engine after a couple of weeks. That loses its stations so put a =
bypass for that and the clock which conveniently are on the same fuse, =
but it still fails after several weeks of not being used.
Checking for a drain isn't difficult even if finding the cause is =
time-consuming. Remove the battery earth strap and connect a VOLTmeter =
in its place. If you have a dynamo there shouldn't be anything shown on =
the meter. With an alternator there is usually a microscopic drain from =
the diodes, which shows up as a few volts on an analogue meter and 12v =
on a typical digital. If you see 12v on a typical analogue you do have =
a drain. Unplug the alternator and if that drops to zero on an analogue =
then the alternator diodes are suspect, a digital is too sensitive to =
tell the difference directly but you could measure the current.
If you still see 12v on either then disconnect any alarm or 'in car =
entertainment', then the purple circuit fuse, hazard flasher fuse, brown =
wires from ignition switch, lighting switch, fusebox, relays and =
solenoid until it drops to zero. The thing that caused it to drop needs =
further investigation, of course.
PaulH.
----- Original Message -----=20
...=20
Then radio man thought that modern radios had facilities that =
connected them to "modern" car computers and thus the drain as the radio =
would keep "on" and chatting even when it was turned off. ...
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<HTML><HEAD>
<META content=3D"text/html; charset=3DUTF-8" http-equiv=3Dcontent-type>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.23588">
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<DIV><FONT size=3D2>I can't really see that, even if you had installed a =
'modern'=20
computer in your V8. Radios with a memory will put a drain on the =
battery,=20
but it shouldn't be a problem after just 'a few days'. Even modern =
cars=20
shouldn't do that for two or three weeks at worst. I had to put a =
cut-off=20
switch in my V8 as the alarm was draining the battery in couple of =
weeks,=20
since when it has been fine. The radio in that keeps its stations, =
and=20
I've run a bypass feed direct to the clock. I also had to put one =
on my=20
'modern' as it's hardly used in summer and wouldn't start the engine =
after a=20
couple of weeks. That loses its stations so put a bypass for that =
and the=20
clock which conveniently are on the same fuse, but it still fails after =
several=20
weeks of not being used.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Checking for a drain isn't difficult even if finding =
the cause=20
is time-consuming. Remove the battery earth strap and connect a =
VOLTmeter=20
in its place. If you have a dynamo there shouldn't be anything =
shown on=20
the meter. With an alternator there is usually a microscopic drain =
from=20
the diodes, which shows up as a few volts on an analogue meter and 12v =
on a=20
typical digital. If you see 12v on a typical analogue you do have =
a=20
drain. Unplug the alternator and if that drops to zero on an =
analogue then=20
the alternator diodes are suspect, a digital is too sensitive to tell =
the=20
difference directly but you could measure the current.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>If you still see 12v on either then disconnect any =
alarm or=20
'in car entertainment', then the purple circuit fuse, hazard flasher =
fuse, brown=20
wires from ignition switch, lighting switch, fusebox, relays and=20
solenoid until it drops to zero. The thing that caused it to =
drop=20
needs further investigation, of course.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>...=20
</B></DIV><FONT size=3D-1><FONT face=3DArial>Then radio man <I>thought =
</I>that=20
modern radios had facilities that connected them to "modern" car =
computers and=20
thus the drain as the radio would keep "on" and chatting even when it =
was=20
turned off. ...</FONT></FONT></BLOCKQUOTE></BODY></HTML>
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