1. Put your fingers under at the bottom and pull out, use a dash removal tool if necessary.
2. Challenger uses CAN bus, that is why the harness is needed. Do you need it for a simple radio install? No. The thread at the top stickied tells you what wires are for which speakers. Other than that you just will need to find an ACC power wire, run a constant power wire to the battery, and make your own ground.
3. I prefer to stick to stock radio, looks cleaner IMO and with the right equipment there is no need to change.
2. Challenger uses CAN bus, that is why the harness is needed. Do you need it for a simple radio install? No. The thread at the top stickied tells you what wires are for which speakers. Other than that you just will need to find an ACC power wire, run a constant power wire to the battery, and make your own ground.
3. I prefer to stick to stock radio, looks cleaner IMO and with the right equipment there is no need to change.