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hi, take your time and do one wire at time. Most of them can actually connect to factory dash wires
power - connect to wire with power with key ON
ground - connected to ground wire
brights - connect to wire that turned on dash's high-beam indicator
neutral - connect wire that turned on dash's neutral light.
Use factory manual's wiring diagram to figure out which wire does function you want. Don't use Haynes or Clymer manuals, they have lots of errors. Use multimeter to verify signal.
Compare stock temp sensor with one they provided. Put both in pot of water and measure resistance. Bring pot to boil and measure resistance of both along way. Maybe every 5-minutes.
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