jnewton450

I am new here and having been searching for an hour with out getting a clear answer, I have a 2005 f150 lariat 4x4 crew cab with the audiophile system in it. My question is I just replaced the factory head unit with a double din unit it all works fine after wiring it up I even bought the extra plug for the factory sub that has two blue wires and two rca plugs on it how in the world do I wire that harness in to get my sub to come on

Wyo11Scab

iTrader: (1)

What harness did you buy?

BassAckwards

Usually the harness to the sub is behind the radio, I don't think you needed to buy a new harness. Then you just route it to the back of the truck.

jnewton450

the extra harness I bought plugs up to the factory harness where it went in to the smaller spot on the back of the factory radio the new harness that plugs into the factory plug has two blue wires and two rca jacks on it

Wyo11Scab

iTrader: (1)

Blue wires are usually for turning on the amp and the RCA jacks would go to the input of the amp. Are you sure you got the correct cable? Sound like the one you have is for an aftermarket amp and not the factory. I would check with the manufacturer of the cable.

04whitefx4

Plug the RCA into the rear out put or in the sub RCA out put and the blue wire gose to the amp turn on the harniss to the after market radio

Venomized

You are correct 04whitefx4.

Youll use the rca outputs on your deck to send signal to the stock amp and sub and the blue wire will be spliced into the remote turn on lead of the deck.

Post a pic of the harness if you will please

jnewton450

this is pic of harness

jnewton450

OK so I figured it out all I had to do was plug one of the blue wires off the harness to the red wire "acc power" and for some reason My rca's were backwards so i had to hook white to red! But it sounds alot better with a aftermarket stereo.