the light worked when the doors were open but did not work with the headlight switch. Would that and the dash light issue be a similar problem with the switch?
I would not think so. However the headlight switch must be grounded. The door switches turn on the dome light by grounding the yellow wire. The connection on the light switch works same way
Not exactly, but you can confirm that everything is getting "connected" that should be. There is a way to determine if the gauges are halfway accurate. There are three resistances which were in the old Mopar test rig.
L = 73.7 Ohms (empty)
M = 23.0 Ohms (1/2)
H = 10.2 Ohms (full)
So you get the cluster together, hook the cluster to battery ground, and the switched 12V going to the IVR up to battery, and then put these resistors in from the sender connections to ground. All the gauges (if equipped with oil) are same, so 23-25 ohms should give you 1/2 scale, 10-13 or so should give you full scale.
