Need help on procedure to taking out Instrument Panel.

First thing; disconnect battery.

Second thing; disconnect battery.

Did I mention you had better disconnect the battery before messing around under the dash?

First: You will need to lower the steering wheel by removing the nuts holding it to the underside of the dash, and three bolts where it passes through the floor. You will most likely have to disconnect the signal switch harness from the under dash harness.

Second: Remove speedometer cable from back of speedometer by reaching up behind the cluster and unscrewing its attaching collar. With steering column lowered, accessing spedo cable will be much easer.

Third: Remove the screws securing instrument pod to dash, and gently pull it from the dash. You will see several sub harnesses attached to the pod, gently pull them free from the circuit board, and remove the nuts securing the red and black wires to the amp gage. Both red & black amp gage wires are connected directly to the battery being main feed to fuse block, and if grounded with the battery connected, will start a fire. So be sure to first disconnect the battery.

The gage cluster should now be free to remove from the car.

Side note:
None of the gages or their lights will work until the cluster is grounded by its securing screws to the dash frame, or with a jumper to ground.

While you have good access to the dash wiring inspect the taped up welded splices in the heavy red and black wires that were attached to the amp gage. If tape is in poor condition, retape the splice with the good stuff; #33-3M electrical tape. Keep the fire gods at bay, cheap electrical tape won’t do, it will not stay wrapped, and won’t stand the temperature extremes car interiors are exposed to so don’t use it.