April 30, 200916 yr I am working on an 87 GL Coupe (4wd) and I just put SPFI on it, converted it to the 6 lug pattern, and now I am trying to figure out why the 4wd won't engage (its an auto with a switch on the shifter). I think I probably disconnected the power accidentily when I put the fuel injection on it. Does anybody have a wiring schematic of the 4wd switch. I have a crappy chilton manual, but it doesn't show anything. Thanks for the help. Dan
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