Any vehicle will have "problems" if it is not maintained. Your truck is now 29 years old and the aftermarket wiring looks like it was done by a child.I heard the TLC is great except that it has brake and electrical problems. So when the starter would go, I assumed that this was one of the electrical problems.
If you maintain this vehicle properly it won't have "problems". If you have issues with your brakes, then fix them. If all the soft brake lines, vacuum lines, coolant hoses, belts, and other wear items are 29 years old, they don't really owe you anything more.
Take care of your vehicle and it will take care of you.