I have a 93 240 2.3L N/A and went ahead and bought the 3 gauge cluster that came on the turbo version to go in my center console. From what I read a few times was that all the wires needed to install the volts and bar meter were surpose to be behind the cluster and it was a quick "just plug it in" install (I plan to swap the boost gauge with the small clock when my tach setup shows up)

But I have looked inside the dash for these wires with no luck, the only loose wire I came across was a red/white which I belive is for the tachometer and a strage grey plug with 4 small round holes) If anyone has installed one of these gauge clusters in a N/A 240 please let me know what you did.

Kenn