I don't see pictures.
Get a manual with a wiring diagram and look for your wires.
I use a PowerProbe 3 whenever I'm dealing with wiring. Touch a wire and the Probe tells you what it is. ....Neg or Pos. If it's hot it tells you the voltage. This thing has really been a help to me. Especially, fixing prior 'modifications'. Or, finding if a wire is grounding or running hot.
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