Where is the ballast resistor located on a 1989 350 Dodge Van?

The ballast resistor on a 1989 Dodge 350 van isn't in a single, easily identifiable location like some vehicles. It's likely integrated into the ignition system's wiring harness or possibly even within a component like the ignition module itself. There isn't a separate, standalone resistor like in older vehicles.

To find it, you'd need a wiring diagram specific to your van's year and engine. This diagram would show the path of the ignition system wiring, and you'd look for a resistor in the circuit that reduces voltage to the ignition coil, often shown as a zig-zag symbol on the diagram. Even then, it might be a built-in resistance within a larger component, not a separate physical resistor.

Without the wiring diagram, physically locating it would be very difficult. You'd likely have to trace wires from the ignition switch to the coil, but that requires significant automotive electrical knowledge and the correct tools to avoid damage.