lost all parking lamps., found all electrical schematics show direct connection
between brown tailamp feed and lights, yet have a parklamp relay under dash.
can anyone shed light
on this system and why the schematics from ford
seem to avoid it? have no power to trailer lamp relay and have confirmed lamp circuit ok by applying power directly., ford shows brown lead to relay and lamps and have found other. cab marker lamps work and so does interior
and dash. thanks bnelectron