[TR] Spitfire Turn Signals

Randall TR3driver at ca.rr.com
Sun Apr 29 19:48:54 MDT 2012


> There is continuity between the voltage regulator and the 
> green wire at 
> the hazard switch.   Though when I check for voltage at the 
> green wire, 
> there isn't any. 

Checking for continuity is always a tricky business, especially with other
things connected to the circuit.  The "continuity" you see may be through
those devices and ground; or may be too high resistance to operate the load.
(For example, many continuity testers will show 10 ohms or so as a
connection; but 10 ohms is much too high to power turn signals.)

If there is no voltage on the green wire with the ignition on, then the
problem is somewhere between where you are checking and the battery.  Since
presumably the gauges powered by the voltage stabilizer do work, the problem
must be between that point and the stabilizer.  Could be a broken wire, but
my money is on the tab on the VS being broken, corroded, or simply not
connected properly.  (It is sometimes easy to slide the blade between the
terminal and the plastic covering, which can sometimes make a connection
that will show continuity but not pass enough power to actually run
anything.)

-- Randall  


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