hello 1998 4.2L
i removed plenum to gain access to IMRC bushings and forgot to label the two coolant lines that run to the rear passenger side of plenum.i know the center nipple is for air/vapor .not sure which of two COOLANT lines goes to the top nipple and which to bottom.when everything was installed it was hard to tell because both hoses are routed under passenger side of plenum behind bracket that holds switches and vacuum lines.they disappear and come back out again near the rear corner but both hoses look the same.appreciate any help.thanks