Recently acquired a cherry 1991 Mighty Max 4x4 with the 3.0 and 5 speed got it for free not running (burnt up ecm). Traced the problem to the Idle Air Control Module going bad which in turn fried the ecm. Got the ECM rebuilt and a new IAC but Im at a loss since the previous owner removed what ever else relay wise while trouble shooting that was near the ecm behind passenger kick panel. It looks like I have 3 plugs just dangling, only info I can find is a fuel pump relay possibly as well as an auto 4x4 module but these arent definitive, any help would be greatly appreciated!