How many wires go the positive side of starter on an 87 Chevy truck 4X4?

Typically, only one wire goes to the positive side of the starter on a 1987 Chevy truck 4x4. That wire carries the high current needed to crank the engine. While there might be other wires nearby in the starter area related to the starting system (like a solenoid wire), only one directly powers the starter motor's positive terminal.