L2H1 crewcab with only front speakers.66 plate registered in May 2017.
I have searched this forum and found some info, but no definitive answers. I have wired the rear speakers in, the wires are in the rear panel on the drivers side, and only to the A-pillar on the passenger side. I have forscan and there is a video on YouTube showing how to change the bcm number of speakers except the options shown on mine are completely different.
There is a link to a guy who has changed the settings on a F150 in the states, but that doesn’t work either. Main dealer say it can’t be done, but why would it have the wiring for it?
Anyone point me in the right direction please? I do t want to link them into the fronts, I want front/rear fade option to work.
Thank you

