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Author Topic:   Ignition Key Switch: Black Conductor
flboy0638 posted 08-20-2014 07:42 PM ET (US)   Profile for flboy0638   Send Email to flboy0638  
[To] what does [the conductor with insulation of color] black from the key switch get hooked to on an enternal [not sure if this is meant to be "external" or "internal"--please clarify] wiring harness going to 1995 FORCE 40-HP outboard engine if the key switch is a Quicksilver Mercury push-to-choke [model that has] wires not terminals on the key switch?

External Wiring Harness					Quicksilver Mercury  Keys witch
+++++++++++++++++++++++ ++++++++++++++++++++++++++++++

Purple ---------------------------TO------------------- Purple (has a pigtail so two)
Red black stripe ---------------TO------------------- Red (has a pigtail so two)
Black yellow stripe --------------TO------------------- Black yellow stripe (has a pigtail so two)
Yellow black strip --------------TO------------------- Yellow black strip
Yellow red stripe --------------TO------------------- Yellow red stripe
Grey (Tachometer) -----------Not Used----------------
-----------Not Used---------------- Brown ([Temperature sensor])
--------------TO------------------- Black (has a pigtail so two)

?--------------TO------------------- Black (has a pigtail so two

*Maybe black gets run back to the battery.

jimh posted 08-20-2014 09:13 PM ET (US)     Profile for jimh  Send Email to jimh     
In most wiring of 12-Volt DC circuits, a conductor with black insulation is part of the battery negative circuit. This generally does not vary by the manufacturer, horsepower, or model year of an outboard engine, or by the manufacturer or model of a replacement ignition switch, or if the switch has conductors as pigtails insted of terminals. However, it is never a good idea to deduce the function of a circuit's conductor entirely by the color of the conductor's insulation. The best way to verify the circuit is to obtain the original wiring diagram for the outboard engine and its wiring harness, and to study the replacement part you have obtained to see if it is compatible.
jimh posted 08-25-2014 10:06 PM ET (US)     Profile for jimh  Send Email to jimh     
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