Instrument Cluster Keeps Going Out

[yaya]

I have a 95 es 300 and the fuse for the gauges keeps blowin only when the 3 pin plug on the alternator is plugged in

[dcfish]

I have a 95 es 300 and the fuse for the gauges keeps blowin only when the 3 pin plug on the alternator is plugged in

Check the 3 pin plug, Could be a short.

[SRVCM]

I concur with DCfish also while youre at it check the resistance of the wires on the 3 pin plug against each other and end to end. a short is basically no resistance between a set of wires, checking the resistance will at least eliminate a possible cause of the blown fuse. Also make sure you are using the correct fuse type. A lower fuse may blow prematurely that the recommended fuse for the circuit.