[AT] 3020 electrical, continued... "resistance wire"?

[Dean Vinson]

Tinkering with the 3020 yesterday and I opened up the dashboard panel to see
what was behind it, and found a rosy colored mousenest decorated with the
insulation from a formerly-red wire stringing back through there.   There's
a three-inch section of wire where the copper strands are exposed, oxidized
dark but still intact with good continuity.



I can replace the wire easily enough, but I'm trying to get my head around
its function.   Near as I can tell from the wiring diagram it's a
"resistance wire".   It's one of two wires connected to the input side of
the coil, the other one coming from the starter solenoid.   Service manual
wiring diagram shows it coming from the ignition switch, but this one comes
from a circuit breaker mounted below the ignition switch.   It's outside the
harness so presumably a replacement for an original wire that failed at some
point.



The battery is a 12-volt and the parts manual says the coil is a 6-volt.
Resistance across the coil tests at 2.8 ohms, and 12V applied at the input
side tests at 12V at the output side, both of which suggest this coil is a
12-volt rather than 6 (according to some websites I found with tips on how
to tell the difference).



So if the "resistance wire" was intended to protect the 6-volt ignition
system from the 12-volt battery, but the OEM coil was replaced with a
12-volt, do I need to replace the wire or can I just remove it and call it
good?



Dean Vinson

Saint Paris, Ohio







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