Aftermarket Radio Wiring Diagram - Factory Harness vs Adapter Kit Install

This is a simple, hand-drawn illustrative diagram (not a factory schematic) explaining three ways an aftermarket car radio can be connected to a vehicle's factory wiring harness. The first panel, labeled 'From the factory,' shows the original setup: the factory harness plugging directly into the Factory Radio via its connector. The second panel, 'How it should be done,' shows the correct aftermarket installation method: the factory harness connector remains intact and plugs into an adapter kit (drawn in red), which is then spliced to the aftermarket radio's harness (drawn in green) leading to the new Radio. The third panel, 'Did they do it like this?', depicts the improper method the uploader suspects was used: the factory harness wires are cut before the factory connector and spliced directly to the aftermarket radio harness, bypassing any adapter kit and destroying the factory plug. The document contains no wire colors, pinouts, fuse ratings, part numbers, or vehicle-specific information; it is purely a conceptual comparison intended to help diagnose or discuss a previous radio installation, likely posted in a forum context for a 1996 Ford Bronco owner evaluating their stereo wiring.