with push button radio that has internal power supply (wiring from inside radio to speaker)... see morewith push button radio that has internal power supply (wiring from inside radio to speaker) Use when installing original, replacement, or aftermarket speaker. Made with correct connector for hook-up to current GM replacement speaker and correct connector for connection to original radio or rear speaker fader switch wiring. You can cut off connector for hook-up to current GM replacement speaker and solder wires directly to original speaker (as was done originally) or aftermarket speaker