Aftermarket Head Unit w/mach 460

you have two options which i am aware of....

through research you will read about an aftermarket head units pre-amp with the in line amps the mach 460 has will blow out the factory amps through time, all though some people will disagree with that...

anyway the "best" "correct" way would be to use an adapter made by Scosche which you could find easily on Crutchfield.com but through personal experience i think that it absolutely blows and is the biggest piece of **** in the world..... its made with poor quality and is extremely difficult to set as you will read about it.... personally i think its a waste of money but if you do decide to purchase this i have mine that i took back out as soon as i tried to hook it up.... just message me.... although i dont think you should because its garbage.... haha

your other option is a Metra smart harness which is plug and play from the head unit to the mach wires.... you need the piece to match your head unit and the piece to go to the mach wires... this can be found at Circuit City or circuitcity.com... it does not adjust the signal to the speakers for the in-line amps though and some say it will blow them over time...

i coulndt tell you long term affects yet as i have only had mine hooked up for about 6 months but i personally liked the Metra 10million times better than the Scoshe garbage.....

idk just some in sight.... there is alot of information on this subject as well as exact part numbers if you search for it.... google it and search these forums.... there is plenty on it...

either way good luck