If that's the case, a harness out of a salvage yard here in the northeast might not be quite as heat-soaked as one from AZ. An '87 would have the C101 connector on the firewall so it would be sort of a simple matter to unplug that and pull everything forward of the firewall. Give a call to Charlie at C&N Auto in Rhode Island, ask what he's got and what he would charge. Just be sure he understands you need the harness intact, not snipped here and there to make it easier to remove.
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