Hi,
Are you referring to the ignition switch? If so, the yellow wire is the crank signal and runs to the ECM.
I attached two different wiring schematics below. Pic 1 shows the yellow wire. Pic 2 is from the power distribution schematic and shows all the wires related. I'm not seeing a black wire. Also, I'm not sure what you mean when you say resister wire, I'm not sure what you are referring to.
Take a look at the pics below and let me know if they help.
Take care,
Joe
See pics below.
Images (Click to make bigger)
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Tuesday, August 23rd, 2022 AT 8:23 PM