Factory radios are made especially for certain vehicles and there fore mesh better with your cars system.
yes you can install an aftermarket radio in a GM vehicle that is equiped with a theft lock radio. the radio itsel has the theftlock not the car so you can install any aftermarket radio in the car. There may be some other parts that you may need to install an aftermarket radio such as a dash kit, wiring harness and antenna adaptor. If your vehicle is a newer model with Bose and onstar, you may need an integration kit made by PAC-audio.
bypass the factory amp
You have to go purchase an aftermarket wiring harness. that will plug into the factory harness then you can wire it to the aftermarket radio.
To install an aftermarket stereo in a 2003 Montana you need to first buy a trim plate or a mounting bracket. Remove the dash panel. Disconnect the ground cable from the battery. Remove the factory stereo. Unplug the factory wiring harness from the radio. Connect the new radio. Test it and reassemble the dash. Reconnect the negative battery terminal.
yes! run it to the trunk
Many aftermarket companies sell adapters for aftermarket wire harnesses. They have the original factory harness at one end and you cennect that to the harness that came with the radio. Check your local car audio installer.
how do you install a aftermarket radio in 1986 caprice
go to this URL How_do_you_install_aftermarket_radio_in_a_ford_transit
If the face plate of the original factory radio is Oval, like the 1997 escort, you can get a new radio faceplate that will accept a standard aftermarket radio from crutchfield. Mine cost $49 back in 1997. It even takes the original A/C and rear defroster controls.
Do yourself a favor. If you are planning to install an aftermarket radio, buy yourself a radio wiring hardness that will fit into the factory wiring hardness. It will cost under $20.00. And it will save you lost of headaches in the future. No short, or problems...Radio RemovalCheck related link below
You can install an after-market stereo in an on-star equipped vehicle, just go to crutchfield.com, but you lose the on-star functionality.
I have never seen a vehicle that has an on/off switch for the speakers, including the Windstar.See "Related Questions" below for more about Windstar radio wiring