Ey guys I got a 2005 f150 fx4 with the stock sub in back. I changed out my headunit for a new one and have no bass out of the sub now? Why is this? There is no plugs coming from the truck to go into the wire harness or the headunit for the sub.

 

There is a second connector from the back of your factory radio that you need to cut off then splice/solder the d subs to connect to the aftermarket radio connectors. I think it only has like 5 or 6 wires, but don't quote me on that.

 

Just outta curiousness were is the factor sub??? It's not tht tweeter thing is it???

 

Okay ill try that but it's really killing me haha and yeah there are two sets of wires I am not using so I can try that but I don't think the colors match? And it's a factory 10 or 8 inch sub in back under my seat I forget which size

 

Ok you will want to use the smaller of the connectors that is left. I don't have the details but you can find it by google. Also the factory amp turn on is a lower voltage than what aftermarket radios put out so you will want to put a resistor in line on that wire. There is a ton of stuff on the net for putting in aftermarket radios into our trucks, just be glad you don't have the factory DVD because that is a PITA to keep working.

The factory sub is under the back seat on the driver's side.

 

If you have the audiophile sound system in it, it would be under the drive side back seat.

 

I can't really find anything online about it because it has to be pulling a new radio with my factory sub and I can't really find anything. This might be because I have to do it off my phone because my comp is broken

 

Oh I thought audiophile was the 6 cd and the tweeter and some different speakers or something. Didnt know there was a sub. Interesting.....