No, the loose wire behind the seat in the cab wouldn't cause a no start
No start
When you turn on the key do you hear the fuel pump run for 2 seconds?
It is not quiet, you can easily hear it "HUMMMM"
Turn key off and on a few times to make sure you either hear it or don't hear it.
Check all the fuses in the engine fuse box, pull out each Relay as well and check connections for corrosion.
If starter motor works then do a 50/50 test
Take off the large air tube on intake manifold
Hold open the throttle plate
Spray gasoline or Quick Start(ether) into the open manifold
Try to start
If it starts and then dies, fuel is the problem
If it doesn't start, then Spark is the problem
50/50
1992 2.3l uses a timing belt and these can break, and you would have a no start.
There is a timing belt cover on the front of the engine, but you can often see the Cam gear at the top, see if it is moving when someone tries to start engine
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