You have to have an adapter I have a 95 mustang with the mach 460. I put 2 10's in my car and i decided to use the factory head unit but it doesnt have rca jacks so you need a rca adapter thingamabob. But if you tap into your rear speakers all of your amps will be disabled. The Mach 460 is set up to shut down if any aftermarket stereo's are put in. Get you one of these adapters and YOU HAVE TO HAVE A SEPERATE AMP FOR YOUR SUB. Turn the bass up on the amp and turn it low on the adapter that way the factory system doesnt think you are drawing off of it. Let me know if you have any other questions. |