Hi guys, sorry but I haven't been able to find an answer to this question. I have a 2017 XLT Screw Sport and want to add an amp and sub (from a previous truck) behind the rear seat.
I've been reading up on the For-11ck harness and am wondering if this is the one to use for only adding a sub. Can I use the power and ground in the harness instead of running a power wire through the firewall?
Also, this might be a silly question but what do I do with all of the extra speaker leads in the harness as I only need a pair for front left and another for front right signal to the amp, correct?
Thanks

 

Read this thread: https://www.f150forum.com/f118/still...r-read-382391/

I used the WPT1212 connector and plugged it into the factory connector behind the driver's side rear seat. Then you need Forscan to enable the subwoofer.

How many amps or watts is your subwoofer? That will determine whether or not you need to run a separate power and ground wire through the firewall.

 

the Factory Sub harness is not active with all trucks..

 

yes you can use it for just a sub, but you will have to connect all the speaker wires for the input and output of the harness and tap the front output from the radio to the sub .. no you can't use the power wire from the harness it is not enough power and a bad idea .. your last question i mentioned before.. connect the input wires of the harness to the output wires of the harness .. they are all color coded

 

Ok, here’s a bit more info:

I bought a Rockford prime sub enclosure with a 10” sub and an Alpine MRV-M250 amp together and used in last truck.

The sub is 2 ohm, 200 W RMS/400 W peak and the amp is 250 W RMS.

Ive been wanting to install this for awhile using the plug behind the back seat but didn’t want to deal with forscan and to get the dealer to enable just never became a priority due in part to my dealer being 200 kms away.

I recently read about the For-11ck and the way I’m understanding is then I don’t have to worry about forscan to enable the sub. And also, from what I’m gathering its better to tap the front speakers for source.

Its been awhile since I’ve dealt with stereo wiring so I’m just trying to make the best decision, and no, I’m not interested in cutting factory wires at all so the route I go has to be plug and play.

Thanks

 

For-11ck is exactly what you need, and yes tap a front speaker for signal as it's full range. Assuming that amp has high level input nothing else is needed except for a power cable from the battery which you will need for that amp.

 

Would the amp say if it has high level input?
Sorry, don’t know a lot about amps lol.
Thanks

 

if it has wire inputs it has high level inputs.. if it has RCA inputs only it has low level inputs .. if that's the case a Dayton DSP would be a great addition

 

If I could figure out how to upload a pic I would but I took a close look at it and it has:

2 wired speaker Outputs
2 RCA Inputs
4 Speaker level Inputs

 

If I could figure out how to upload a pic I would but I took a close look at it and it has:

2 wired speaker Outputs
2 RCA Inputs
4 Speaker level Inputs