Well on my 91 there is a plug in that has 4 wires on it. It is plugged in to a black shunt. Unplug the black shunt and plug it in to the clutch peddal. It should be around there sum where under the dash around where the clutch peddal would be.
There were no extra plugs in there anywhere. I read an older thread that said it would be taped up in the harness. I pulled the dash to install the pedals and replaced the dash while I was at it. I took all of the wiring from the old dash and put it in the new one. There wasn't any extra's