[TR] TR3A Electrical Gremlins

George Richardson gprtech at frontiernet.net
Sun Feb 1 10:43:06 MST 2009


Scott, only a short someplace will make that wire get that hot. Use an 
ohmmeter and check the resistance from the point it connects to the 
switch to ground.

George Richardson



Scott Suhring wrote:
> I am sorting through the electrical problems with my 59 TR3A restoration. I
> have the ignition switch working now, the starter push button and the rear
> lights all work. My problem seems to be with the wires/circuit coming off
> the ignition switch. Basically, none of the electricals work that draw its
> power from the ignition being turned on.  I am going to try running a wire
> from the multi-ground post that is on the instrument center dash to a good
> ground since this could be the problem. The center dash is powder coated and
> I may not have a good metal to metal ground point to the chassis.
>
> My bigger concern right now is that when I turn on the ignition switch, the
> "hot" wire gets hot to the point that you can smell the plastic wire coating
> and it is getting soft. I draw the power from the Brown/Blue wire that comes
> from the harness to the side light switch (this is a continuous power since
> the lights come on even when the ignition switch is not turned on). The
> brown/blue wire seems to be about a 20 gauge wire and I am using a 16 gauge
> wire to connect to the switch, which I thought did not matter per a previous
> post.  Any ideas on why this wire is getting so hot and what I need to do to
> correct it?  TIA
>
> Scott Suhring
> Mechanicsburg, PA
> '70 TR6
> '59 TR3
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