Chrysler Repair: 91 Plymouth voyager:cluster/ignition gremlins, side kick panel, plymouth voyager

Question
Hi I have a 91 Plymouth Voyager 2.5l with 245 mi.The gauges stopped working,even the odometer.Sometimes all of the warning lights(low fuel,check engine,airbag,low washer fluid.ect) will start flashing. Also the check gauges light is on when you open the door or turn on the headlights it goes off. Also the fuel pump or spark will just cut out. I tried a new ignition,3 gaude clusters,checked all grounds,and a computer still no luck.I also tried to manually ground out the temp sensore on the engine and still nothing. Please help Thanks
-Jesse

Answer
Hi Jesse,
The grounds on the instrument panel are a possibility. The manual show 2 pages about them. The grounding from the cluster is via a 16-pin green disconnect at the lower right side of the instrument panel and from there via two separate black wires to the left side kick panel (just in front of the driver side door opening). Check the connector and the ground at the kick panel.
Then on the 'power side' start with fuse 15 which powers the cluster to see if it has a solid power supply to it via a dark blue wire from the ignition switch pin 1 in the run position, and the switch's section to to that wire gets its power from a red wire on pin B1 which in turn gets its power via an orange fusible link that comes from a 10 gauge red wire which in turn gets power from a 6 guage black wire from the torpedo disconnect near the battery. The output wire from fuse 15 is dark blue/white and is involved in many of the things that may be of interest (warning lamp cluster, body computer, instrument cluster).
Interestingly, this is an early body computer set up, so it could conceivably be a problem with the body computer or its power supply (the same dark blue/white wire) as many of those gauges/warnings are mediated through that computer. But that dark blue wire on pin 1 of the ignition switch also powers the ASD and so if it were flaky would explain the loss of fuel and spark. I assume that you changed the 'ignition' switch?
Roland