Electrics went haywire 1998 International 4800 Please read Any advice would be great

In a 1998 International 4800 4x4 I went to start it about 10 minutes after it was just running and the electrics went crazy in the cab. I turned the key to and the gauges pegged out. Went to start it and nothing. Checked lights, thought maybe the battery, gauges were going crazy. I turned the turn signal on and the interior overhead light started flashing instead instead of the cluster light. Headlights, turn signal lights, strobes, reverse lights all work when they want to. It on beeps once when the key is turned. Use to beep several times. Sometimes it will turn over for a second when I try to start it. But then stop and nothing. All that started after I replaced a turn signal bulb in the cluster. But it started and everything was fine immediately after that. Did the cluster go out when I changed the bulb?

 

Thanks. I'll look closer for more damaged wires or anything. I have the dash back apart and the cluster loose so I could check behind it for any visible wiring or connection problems. All plug-ins were tight and no pinched wires from what I saw. I left it apart, hooked the battery back up and turned the key. Same problems. Could a malfunctioning PCM cause those problems?

 

Yesterday I took the dash apart. Checked all wiring connectors and anything that had a wire going in it. Then I took the shifter dust cover and dog house off. Checked all those wires and connectors. I checked all the wiring on the frame rail to the back. Then I put it all back together and all the lights started back working. But the starter won't turn over. I thought maybe silinoid. Banged on that, still nothing. No clicking from the silinoid. Clicking coming from the pcm. And the batteries are dying quickly now. Next chance I get I'm going to meter the silinoids to see if power is going to them. Any opinions from anyone would be greatly appreciated. Just sunk $20,000 into getting the bed and hydraulics redone on it. It not running is killing me.

 

I did disconnect the battery before I did anything with the wiring. I have not yet really checked any wiring under the hood. I had to walk away after it not starting when I checked the wiring in the dash. I didn't check every single wire for continuity. Only all connections. I visually checked the big wiring harnesses for damage that is behind the cluster. I also checked the circuit board in the cluster for any weak solders. Saw nothing wrong. When I start back on it I'll check all wires under the hood, going into the pcm, and I need to get a wiring diagram for the truck from somewhere.