You should use an Adapter plug, so you won't have to splice into Factory wires.
Here is Factory & (should be ) your New Radio wires
Constant 12V+ Pink = YellowSwitched 12V+ Blue = RedGround Gray = BlackIllumination Red/Blue Dimmer Red/Yellow Front Speakers:Left Front (+) Pink = WhiteLeft Front (-) Blue = White / BlackRight Front (+) White = GrayRight Front (-) Black = Gray / BlackRear Speakers : Left Rear (+) Light Green = GreenLeft Rear (-) Purple = Green / BlackRight Rear (+) Blue = PurpleRight Rear (-) Pink = Purple / Black
Don't want you to burn anything out........That is another reason for the Adapter Plug.Be sure the wires are correct.You can take a 1.5 Volt Battery (flashlight battery) & connect accross the wires I gave you to find the Speaker, & it will not damage anything.
Example:Pink & Blue ...the speaker will pop or make a noise