On 8 Sep 2008 at 12:23, Todd Bermudez wrote:
> I'll check out each lamp when I get home
I'd suggest you do more, if you have a voltmeter or a wiring diagram.
Ask youself this - how can a bulb possibly glow if it has no voltage
across its terminals? It can't (duh). So if a bulb is glowing all
by itself it must be getting voltage from somewhere. Those bulbs are
wired with one side to ground and the other side getting voltage when
the appropriate switch is closed, so some wire is feeding it voltage
when it isn't supposed to. This suggests the misconnection is
somewhere else, possible behind the dashboard or maybe under the
bonnet but not directly related to the light wiring itself. Does it,
for example, make any difference if the ignition or accessories are
switched on or off?
Note, the complete circuit from voltage to ground might not be
direct. For example, a ground circuit could go through the horns,
i.e. power through light through horn to ground. And mentioning
horns suggests another possibility. Aren't the horns wired such that
they are always powered and you honk them by grounding their "other
side" to something in the steering column? Accidentally running the
powered horn wire to a light terminal would be a possible way they
could be staying on.
On the other hand, ask youself this - how can a bulb possibly glow if
it has no voltage across its terminals? Maybe Lucas, Prince Of
Darkness, is having pangs of guilt. You think? Nah....
--
Jim Muller
jimmuller@rcn.com
'80 Spitfire, '70 GT6+
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