Thanks guys!
This is primarily a curiosity thing as I've never seen one but Corey, if Chris is removing this and would part with it, I'd be interested.
In the fuse block, there are 3 common snap-in [from the back] connectors: Power Windows (C1960), 4wd indicator (C1961), and Power Locks (C1962).
In the 86 EVTM I've always wondered about the similarly shaped, yet unnumbered, spot between fuses 18 and 15.
Looked in the 1981 EVTM this weekend and see that it is labeled C1963 and goes to the Feedback Carburetor Control. That page appears to only be applicable for 6 Cyl Calif (4.9L).
Seth - if you remove the fuse panel cover and look in the square space between 18 and 15, do you see something in there clamped over the metal strip? Would guess it's a green/blue color.
No need to remove the connector or anything like that, just interested to hear someone say they have it.
Scott
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Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole
But there ain't nothin' wrong with the radio