Wiring up rear window defroster, need tips

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packer0440

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I have a '92 truck with a defogger; several of the wires plug into the convenience center under the dash; you can harvest the plugins from a salvage yard. I believe that the early model trucks have a time-delay device that is internal to the switch, if you have an OEM one at least.
Here is a thread that has wiring diagrams for many model years:
 
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