2016 F150, Interior lights on trailer only work while the ignition is on.
#11
2016 maybe the 15's have a smart battery system.. it needs to sense a battery and be listed in the towing app....then cycle the brake to activate...works with my electric brake trailers...but as stated you need an on board battery to keep the light on in the trailer...ford failed with this change to the system from the 09-14 models...this new system is a total p.o.s....from the old...
#12
Senior Member
you have a breakaway battery...it'll pwr lights for alitte while... the truck charging system will charge it... but a better battery and a change to the charging system will work better...
#13