[Spits] Turn signal indicator stays on

[Jim Muller]

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 at rcn.com
'80 Spitfire, '70 GT6+