Gwellin, don't forget to add the year and model of your truck when you add the extra info..different yrs have different wiring colors.
Tracing wires is always best done using a wiring schematic and a test meter that reads ohms and volts-normally called a volt-ohmmeter. You can also use a 12volt dc test light.
Now I'm not an electrician but this is a rugged explanation of how it goes-
You disconnect one end of the circuit by pulling apart the connector or removing the wire from its component. Using a jumper,You ground the end of the wire and find out where the wire ends using the schematic. you remove the remaining end of the wire circuit and connect one end of the ohm-meter test lead to it and touch the other test lead of the meter to ground. The meter is set on the ohms scale. x1 should send the meter needle all the way across the scale, or if the meter is digital it should read below 1 ohm. Something like 0.2 or 0.1.The indication is very small resistance, or continuity between one end and the other end of the wire. If the meter doesn't show continuity then there is a break or interruption in the wire and it needs to be fixed.
Correct wiring schematics are super important.
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